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Q1:3.7 Distributing Oil: Texxon Oil Distributors, Inc., has three active oil wells in a west Texas oil field. Well 1 has a capacity of 93 thousand barrels per day (TBD), Well 2 can produce 88 TBD, and Well 3 can produce 95 TBD. The company has five refineries along the Gulf Coast, all of which have been operating at stable demand levels. In addition, three pump stations have been built to move the oil along the pipelines from the wells to the refineries. Oil can flow from any one of the wells to any of the pump stations and from any one of the pump stations to any of the refineries, and Texxon is looking for a minimum-cost schedule. The refineries' requirements are as follows. Refinery R1 R2 R3 R4 R5 Requirement (TBD) 30 57 48 91 48 The company's cost accounting system recognizes charges by the segment of pipeline that is used. These daily costs are given in the tables below, in dollars per thousand barrels. To Pump A Pump B Pump C Well 1 1.52 1.60 1.40 From Well 2 1.70 1.63 1.55 Well 3 1.45 1.57 1.30 10 To R1 R2 R3 R4 R5 Pump A 5.15 5.69 6.13 5.63 5.80 From Pump B 5.12 5.47 6.05 6.12 5.71 Pump C 5.32 6.16 6.25 6.17 5.87 (a) What is the minimum cost of providing oil to the refineries? Which wells are used to capacity in the optimal schedule?See Answer
Q2:3.4 Distributing a Product: The Lincoln Lock Company manufactures a commercial security lock at plants in Atlanta, Louisville, Detroit, and Phoenix. The unit cost of production at each plant is 35.50, 37.50, 37.25, and $36.25, and the annual capac- ities are 18,000, 15,000, 25,000, and 20,000, respectively. The locks are sold through wholesale distributors in seven locations around the country. The unit shipping cost for each plant-distributor combination is shown in the following table, along with the forecasted demand from each distributor for the coming year. in Atlanta Tacoma San Diego Dallas Denver St. Louis Tampa Baltimore 2.50 2.75 1.75 2.00 2.10 1.80 1.65 Louisville 1.85 1.90 1.50 1.60 1.00 1.90 1.85 Detroit 2.30 2.25 1.85 1.25 1.50 2.25 2.00 Phoenix 1.90 0.90 1.60 1.75 2.00 2.50 2.65 Demand 5500 11,500 10,500 9,600 15,400 12,500 6600 (a) Determine the least costly way of shipping locks from plants to distributors. (b) Show the network diagram corresponding to the solution in (a). That is, label each of the arcs in the solution and verify that the flows are consistent with the given information.See Answer
Q3:2.10 Scheduling Tire Production: The Seaboch Tire Company produces four lines of tires: the economy, the glass-belted, the snow, and the radial tire. The problem it faces is to schedule two shifts of production during the last quarter of the calendar year. The production process primarily involves the use of vulcanization, fabrication, and plastometer equipment, but the limiting resource is the availability of the vulcanization machines. The four tires require different amounts of time at vulcanization, as tabulated below. Tire Hours/tire Econ. Glass Snow Radial 4.5 5 5.5 6 A sales forecast is available, breaking down predicted sales (in thousands) by tire type and by month. Sales October November December Econ. 8 7 6 Glass 18 16 18 Snow 4 15 Radial 5 15 8 In addition, the number of hours of vulcanizing time (in thousands), for each shift and for each month, is also known. October October November November December December Shift 1 2 1 2 1 2 Hours 110 100 130 120 120 115/nThe labor cost of operating the vulcanizing machines is $10 per hour during the first shift and $12 per hour during the second shift. The other relevant cost is storage: It costs $4 per month for storage and handling at the warehouse, regardless of tire type. This cost is incurred when production is scheduled in advance of demand to ensure that demand is met on time. (a) What production plan will minimize cost and meet demand at Seaboch Tire? 201 (b) How would the solution in (a) change if sales for each tire in December were 10% higher?See Answer
Q4:2.8 Make or Buy: A sudden increase in the demand for smoke detectors has left Acme Alarms with insufficient capacity to meet demand. The company has seen monthly demand for its electronic and battery-operated detectors rise to 20,000 and 10,000, respectively, and Acme wishes to continue meeting demand. Acme's production process involves three departments: fabrication, assembly, and shipping. The relevant quantitative data on production and prices are summarized below. Monthly Hours Hours/Unit Hours/Unit Department Available (Electronic) (Battery) Fabrication 2000 0.15 0.10 Assembly 4200 0.20 0.20 Shipping 2500 0.10 0.15 Variable cost/unit $18.80 $16.00 Retail price $29.50 $28.00 The company also has the option to obtain additional units from a subcon- tractor, who has offered to supply up to 20,000 units per month in any combination of electronic and battery-operated models, at a charge of $21.50 per unit. For this price, the subcontractor will test and ship its models directly to the retailers without using Acme's production process. (a) What are the maximum profit and the corresponding make/buy levels? (This is a planning model, and fractional decisions are acceptable.) (b) Trace the effects of increasing fabrication capacity by 10%. How will the optimal make/buy mix change? How will the optimal profit change?See Answer
Q5:2.7 Production Planning for Automobiles: The Auto Company of America (ACA) produces four types of cars: subcompact, compact, intermediate, and luxury. ACA also produces trucks and vans. Vendor capacities limit total pro- duction capacity to at most 1,200,000 vehicles per year. Subcompacts and com- pacts are built together in a facility with a total annual capacity of 620,000 cars. Intermediate and luxury cars are produced in another facility with capacity of 400,000; and the truck/van facility has a capacity of 275,000. ACA's marketing strategy requires that subcompacts and compacts must constitute at least half of the product mix for the four car types. Profit margins, market potential, and fuel efficiencies are summarized below. Profit Margin Type ($/Vehicle) Potential Sales (in 000s) Fuel Efficiency (MPG) Subcompact 150 600 40 Compact 225 400 34 Intermediate 250 300 15 Luxury 500 225 12 Truck 400 325 20 Van 200 100 25 The Corporate Average Fuel Efficiency (CAFE) standards require an average fleet fuel efficiency of at least 27 MPG. ACA would like to use a linear program- ming model to understand the implications of government and corporate policies on its production plans./n61 (a) What is the optimal annual profit for ACA? (b) How much would the annual profit drop if the fuel efficiency requirement were raised to 28 MPG?See Answer
Q6:QUESTION 3 a. A single facility is needed to meet the demands of four markets. The locations and demands of these four markets are shown below. Market Coordinates Demand A (8,6) 10 B (4,12) 15 C D (3,2) (9.6) 10 6 b. i. Using the data in Table 13.2, identify an optimal location for the new facility. [8 marks] An operations manager has narrowed down the search for a new King Kola plant to three locations. Fixed and variable costs follow. Fixed Cost Variable Cost Location A $100,000 $10 B $150,000 $7 C $200,000 $5 600 Annual 500 Cost (1000) 400 300 i. ii. 200 100 8 10 14 16 18 20 Q (000s of units) Plot the total cost curves in the chart provided above and identify the range over which each location would be best. [7 marks] Use break-even analysis to calculate exactly the break-even quantity that defines each [3 marks] range./nA manufacturing firm is considering three potential locations for a new parts manufacturing facility. A consulting firm has assessed three sites based on the four factors supplied by management as critical to the location's success. Management-supplied the factor weights and the consultant team scores as seen in the table below. Scores are based on 50 = best. Location Factor Weight A B C Labor Climate 10 35 45 20 Taxes 30 30 40 40 Utilities 20 25 20 45 Wages 40 10 25 25 i. Which location should be selected and why? [7 marks]See Answer
Q7:QUESTION 2 a. Month Demand 1 45 234567899 48 43 48 49 54 47 50 46 10 47 Using the table above, calculate two forecasts using the following method:- i. iii. First, for periods 4 through 10, develop the exponentially smoothed forecasts using a forecast for period 3 (F3) of 45.0 and an alpha of 0.4. [3 marks] ii. Calculate the weighted moving average for periods 4 through 10, using weights of .70, .20, and .10, with 0.70 applied to the most recent data. Calculate the mean absolute deviation (MAD) for each forecasting procedure. Which forecasting procedure would you select? Why? [3 marks] [6 marks] b. The number of disk drives (in millions) made at a plant in China during the past 5 years follows: Year Disc Drives 1 140 2 160 3 190 4 200 5 210 i. Forecast the number of disk drives to be made next year, using linear regression. [13 marks]See Answer
Q8:Question 1 Tailwind, Inc., produces high-quality but expensive training shoes for runners. The Tailwind shoe, which sells for $210, contains both gas- and liquid-filled compartments to provide more stability and better protection against knee, foot, and back injuries. Manufacturing the shoes requires 10 separate tasks. There are 400 minutes available for manufacturing the shoes in the plant each day. Daily demand is 60. The information for the tasks is as follows: Task Performance Time (in minutes) Task Must Follow This Task C, D E, H ABBGAFCE- 1 3 2 4 1 -325-32 ABCDEFGHIN Required: a. Draw the precedence diagram showing the task precedence and their times b. Determine the cycle time associated with the rate of output required. [5 marks] [3 marks] c. What is the theoretical minimum number of work stations required to satisfy this output rate? [3 marks] d. Allocate the tasks to work stations taking into consideration the precedence requirements and using the LOT rule to break ties between feasible tasks. [10 marks] e. What is the efficiency of the line and the idle time percentage? [4 marks]See Answer
Q9:Problem 1. Eastern Airlines would like to operate the following flights every day: Flight number From To Departure time Arrival time Fare Demand EAL301 LGA BOS 1100 1200 $150 250 EAL302 LGA BOS 1200 1300 $150 250 EAL303 LGA BOS 1400 1500 $150 100 EAL331 BOS LGA 0800 0900 $150 150 EAL332 BOS LGA 1130 1230 $150 300 EAL333 BOS LGA 1400 1500 $150 150 EAL501 LGA ORD 1200 1500 $400 150 EAL502 LGA ORD 1300 1600 $400 200 EAL551 ORD LGA 0800 1100 $400 200 EAL552 ORD LGA 0930 1230 $400 150 Eastern Airlines has the following fleet available: Aircraft Number Capacity (seats) baseCost cost Per Hour range (nm) A319 737-800 1 120 7500 2500 3750 2 150 9500 2500 2935 767-300ER 2 250 12500 2500 5980 (a) Using AMPL, find the optimal fleet assignment. Submit your AMPL files and your integer programming formulation. (b) Which aircraft is used to operate each flight? (c) How many passengers are carried on each flight? (d) What is the daily operating costs? (e) What is the daily profit of the airline? Problem 2. Solve problem 1 again, including parts (a)-(d), except with a 30% recapture rate of spilled demand. (The problem can be formulated with a quadratic objective and linear constraints. I have verified that AMPL with CPLEX can solve the optimization problem.)See Answer
Q10:6. Figure below gives the mileage of the feasible links connecting nine offshore natural gas wellheads with an inshore delivery point. Because wellhead 1 is the closest to shore, it is equipped with sufficient pumping and storage capacity to pump the output of the remain-ing eight wells ta the delivery point. Determine the minimum pipeline network that links the wellheads to the delivery point. (10 points) (SE 2000 1300 1100 1000 CH 200 DE DC 2000 2600 780 900 1400 1300See Answer
Q11:4. Electro produces 15 electronic parts on 10 machines. The company wants to group the machines into cells designed to minimize the "dissimilarities" among the parts processed in each cell. A measure of "dissimilarity," dij among the parts processed on machines i and j can be expressed as: dij = 1 - nij nij + mij where nij is the number of parts shared between machines i and j, and mij is the number of parts that are used by either machine i or machine j only. The following table assigns the parts to machines: Machine Assigned parts 1234 1,6 2 2,3,7, 8, 9, 12, 13, 15 3 3,5,10,14 4 5 6 7 2, 7, 8, 11, 12, 13 3,5, 10, 11, 14 1,4,5,9,10 2,5,7,8,9,10 8 3,4,15 9 4,10 10 3,8, 10, 14, 15 a) Express the problem as a network model (10 points) b) Show that the determination of the cells can be based on the minimal spanning tree solution and show the solutions for 1 cell, 2 cells and 3 cells. (10 points)See Answer
Q12:5. You are the manager of a project to improve billing process. The table below shows the data that you have to work with. Indirect costs are $1,600 per week and penalty costs are $1,200 per week after week 12. What is the minimum-cost schedule for this project? The critical path at the start is B-D-F at a duration of 18 weeks. (15 points) Activity Immediate Predecessor NT (Weeks) CT (Weeks) NC ($) CC ($) A 4 1 5000 8000 B - 5 3 8000 10000 C A 1 1 4000 4000 D B 6 3 6000 12000 E B,C 7 6 4000 7000 F D 7 6 4000 7000See Answer
Q13:3. The Giant Farmer Company processes food for sale in discount food stores. It has two plants: one in Chicago and one in Houston. The company also oper-ates warehouses in Miami, Florida; Denver, Colorado; Lincoln, Nebraska; and Jackson, Mississippi. Forecasts indicate that demand soon will exceed supply and that a new plant with a capacity of 8,000 cases per week is needed. The question is where to locate the new plant. Two potential sites are Buffalo, New York, and Atlanta, Georgia. The two tables at the bottom of this page give data on capacities, forecasted demand, and shipping costs that have been gathered. For each alternative new plant location, determine the shipping pattern that will minimize total transportation costs. Where should the new plant be located? Use Solver for this problem (5 points) Plant Chicago Capacity (Cases per Week) Demand (Cases Warehouse per Week) 10,000 Miami 7,000 Houston 7,500 Denver 9,000 New plant 8,000 Lincoln 4,500 Total 25,500 Jackson 5,000 Total 25,500 Shipping Cost to Warehouse (per Case) Plant Miami Denver Lincoln Jackson Chicago $7.00 $2.00 $4.00 $5.00 Houston $300 $1.00 $5.00 $2.00 Buffalo (alternatvie1) $6.00 $9.00 $7.00 $4.00 Atlanta (alternative 2) $2.00 $10.00 $8.00 $3.00See Answer
Q14:4. Consider the activities, durations, and predecessor relationships in the following network. Draw the network and answer the questions that follow. a. Draw the precedence diagram. (5 points) b. What is the critical path? Show all steps using the precedence diagram. (10 points) c. What is the probability of completion of the project before week 42? (5 points) Activity Immediate Optimistic Description Predecessor(s) (Weeks) Most Likely (Weeks) Pessimistic (Weeks) A --- 4 7 10 B A 2 8 20 C A 8 12 16 D B 1 2 3 E D, C 6 8 22 F C 2 3 4 G F 2 2 2 H F 6 8 10 I E, G, H 4 8 12 J I 1 2 3See Answer
Q15:2. A device has a constant failure rate of λ = 0.02/hr. (a) what is the probability that it will fail during the first 10 hrs. of operation? (5 points) (b) Suppose that the device has been successfully operated for 100 hr. What is the probability that it will fail during the next 10 hrs. of operation? (5 points)See Answer
Q16:4. Five workers are available to perform four jobs. The time it takes each worker to perform each job is given in the table below. The goal is to assign workers to jobs so as to minimize the total time required to perform the four jobs. Formulate this as an assignment problem and find the optimal assignment. Time (Hours) Worker 1 Job 1 10 Job 2 Job 3 Job 4 2345 58222 16 9 12 12 12 15 02266 12 12 15 10 56882 02258See Answer
Q17:Note: Put all your work in a single Excel file, one question per tab. Include screenshots or hand- drawn pictures in the table. 1. Find the dual of the following linear programming: (a) Minz = 3x1-3x2 + 4x3 Subject to: 4x1 + x25x3 ≥ 10 2x1 x2+x3 = 15 x10,x2 urs, x3 ≥0 (b) Max z = 3x1+5x2 Subject to: 4x1 - 2x2 ≥ 10 5x + 2x2 ≤ 16 7x1 +5x2 = 50 -x1+9x2 ≥ 30 x1≥0,x2 ≤0See Answer
Q18:/n AUM American University Of The Middle East COURSE Project (10%) 2023-2024 Operations Research -Optimization IE335 Semester: Spring 2024 2023-2024 www.aum.edu.kw Tel: (965) 222 51 400 • Fax: (965) 222 51 427 P.O.BOX:220 Dasman, 15453 Kuwait Contents I. Introduction II. Project Description........... III. ABET Learning Outcome IV. Project Management & Deliverables......... V. Turnitin………………….. VI. APA Style VII. VIII. Academic Honesty and Integrity Assurance.. Copyrights.......... IX. Project and team-based work.. X. Marking Scheme XI. Student Assessment Rubric ...3 .4 .6 .6 .7 .7 .8 .8 .9 .9 .11 Page 2 of 14 Introduction Projects for engineering students give an edge over the race of recruitment to work hard to ensure a good career. Despite employment practices in recent times, students are progressively taking up projects to pad up their skill set. Engineering projects help students to learn and acquire practical knowledge. Despite the theory concept they acquire, various industries also need to know their capacity to complete projects using their specific initiatives. Thus, we recommend students realize engineering projects in their four years of engineering and try to present as many white papers as possible. Students who give importance to their course projects are expected to learn how to: • Work in teams including multidisciplinary teams Build a major design experience based on the knowledge and skills acquired in the coursework Build a major design experience that incorporates appropriate engineering standards and multiple realistic constraints • Apply both analysis and synthesis in the engineering design process, resulting in designs that meet the desired needs The IE 335 course project shows competency in understanding and applying the course objectives and achieving learning outcomes. The purpose is for the students to learn how to formulate a real- life problem and to experience solving it using concepts and techniques taught in class. Students, in groups of a maximum of three, will work on the assigned transshipment problem. It is expected that each student will, fully and actively, participate in the project as an effective team member. The work submitted by the group should be the group's own work and not copied from a previous case study or project. The project will be the application of the transshipment problem to a real-life setting. The solution of the transshipment problem can be partitioned into a 3-step procedure: 1. Determine the type of waste material and make a forecast for the total amount of waste expected annually. 2. Design a country wide waste collection network using candidate facility locations and determine how much of waste material to be carried from/to each location at a minimum cost. 3. Evaluate various scenarios under variable demand, using different number of facilities, and various locations for them. Optimization is essentially used in performing steps (2) and (3). The project itself will be completed in two phases. First, the project involves formulating a linear program (LP) for the small-scale problem given in Section II of this guideline. Second, the project involves solving the LP formulation and interpreting the results. Students should use a type of waste material data (i.e., plastics, paper, tire, battery, motor oil, construction material, fabric, etc.). The dataset will be given, or the students can obtain their data from various sources such as Environment Public Authority Kuwait. The project will be completed by preparing the EXCEL or the LINGO input files to solve the LP formulation of the problem. Page 3 of 14 The students can contact the Environment Public Authority Kuwait (https://epa.org.kw/en- us/RecycleFactory) to reach an appropriate data in which they could undertake this project. The students can also be inspired by the Kuwait National Development Plan which sets the nation's long-term development priorities while looking for an appropriate topic/company. (http://www.newkuwait.gov.kw/en/). The students should not also forget to apply the ethical code for engineers as stated by the Institute of Industrial and Systems Engineers during their project (http://www.iise.org/details.aspx?id=299). Third, the project constitutes solving the problem using the EXCEL solver or the LINGO software and obtaining the optimal solution together with discussions. Project Description With the project concept (as presented above) have been developed among your group members, the following gives comprehensive guidelines of what is supposed to be done to go through all phases of the project and develop all required deliverables. Make smart use of those guidelines in your project work. The transshipment problem is an extension of the transportation problem in which intermediate transshipment points are added between the sources and destinations. An example of a transshipment point is a distribution center or warehouse located between plants and stores. In a transshipment problem, items may be transported from sources through transshipment points on to destinations, from one source to another, from one transshipment point to another, from one destination to another, or directly from sources to destinations, or some combination of these alternatives. We will provide the following example to better illustrate what a transshipment problem involves. Preliminary Example of a Transshipment Problem A recycling company wishes to setup a recycling network to overcome the waste problem in Kuwait. Its aim is to recycle several types of materials such as plastics, batteries, and waste electrical and electronics equipment. In various locations the waste material is collected in containers. These are the collection points. Then the waste material is transferred to consolidation points to consolidate and transfer them to recycling facilities in large quantities. How should the waste be collected if the company wants to minimize total transportation cost? Page 4 of 14 d-maps.com Salemy Abdali Kuwait city Al-Jahra Hawalli Waste material collection point Waste material consolidation center Al-Wafra Waste material recycling facility Qasr 30 km N 20 mi O→ Mercator FIGURE 1. POSSIBLE LOCATIONS OF FACILITIES FOR THE WASTE COLLECTION NETWORK The company's aim is to transfer all the waste from collection points to consolidation centers, and from consolidation centers to recycling facilities at a lowest cost. As an example, Table 1 presents the estimated plastic waste over Kuwait next year. TABLE 1. SAMPLE DATA FOR ESTIMATED PLASTIC WASTE IN KUWAIT (in thousands of tons) City Amount of plastic Abdali Al-Jahra Al-Wafra Hawalli Kuwait City Salemy Qasr 28.25 44.00 22.75 32.25 42.00 8.25 18.50 waste It should be determined how much of the material should be collected from each collection point to send the facilities. For instance, Kuwait City produces 42,000 tons of plastics waste, annually. Page 5 of 14See Answer
Q19: ENGG4103 Engineering Asset Management S1 2024 Practical 2 Attach this to your submission. Total Cost of Operation Exercise The objective of this exercise is to compare the total cost of operation of a BEV and equivalently sized hybrid electric vehicle (HEV) car. We have chosen to study the Tesla Model 3 (Long Range) and equivalent Toyota Camry Hybrid Ascent as they represent medium sized family cars. Figure 1(a) Tesla Model 3 and (b) Toyota Camry Hybrid Ascent Source www.carsales.com accessed 25 Apr 2024. Find a student to pair with. Elect one of you to study the Tesla Model 3. The other will study the Toyota Camry Hybrid. A new 2024 Tesla Model 3 costs approximately $76,500. Being an EV, it is exempt of sales tax. A new Toyota Camry Hybrid Hatchback costs around $52,00 including importation duties. The cars will be 80% financed by debt financing at an interest rate of 8%. (i) Use www.carsales.com.au to search for the resale value of used vehicles. Use the following search parameters: 1 Limit the search to vehicles for sale in Queensland. For the Tesla Model 3, limit your search to long range model (this is under the “badge” label). For each model, the search should bring up around 26 vehicles for sale. For the Toyota Camry Hybrid, select all Camry's for sale in Queensland. Selecting the Fuel/Electric label and “Hybrid”. Then uses the “badge" label to select "Ascent". Your search will bring up around 50 vehicles for sale. For each model, collect information on the model year, km and sales price for all the vehicles identified. Input this data into an Excel spreadsheet. Calculate the vehicle age (in years), with 2022 as your reference point (year 0). Show this data in a table. For each model, prepare an x-y scatterplot of vehicle sales price against vehicle age. Fit an exponential curve and display the best fit regression equation and correlation coefficient. What is the value of the best-fit decay coefficient in each case? (ii) (iii) (1 mark) (1 mark) Considering that the vehicles will operate for an average of 15,000 km each year over a 10-year period, use the excel spreadsheet template provided to determine the after-tax residual values for the vehicles. Consider a tax rate of 30%, and linear depreciation over a five-year period. (1 mark) Calculate the Equivalent Annual Cost/km for the capital recovery cost (equal to the loss of value per year plus opportunity cost) of the vehicles. Use a discount rate of 8% (1 mark) (iv) Calculate the interest repayments on the sum of money financed by debt (1 mark) Operating Costs To estimate operating costs, assume that each vehicle will travel 15,000 km per year. The fuel efficiency of a Toyota Camry Ascent is between 4.2 and 9.3 litres/100km in the city - let's assume an average of 6.8 1/100 km. Assume a fuel cost of $2.39 per litre (the average ULP 91 price on 26 April 2024) A Tesla Model 3 Long Range with a 75 kWh usable battery size has a range of 681 km (let's assume 600 km as this is always overstated!) Assume an efficiency of 85% and an electrical cost of $0.30 per kWh in Queensland. Use the maintenance plans and costs that in Assignment 1 to project maintenance costs across 10 year period. Assume no major component change-outs. 2 Summary of expenses Year 2 6 7 8 9 10 Insurance 2,500 2,650 2,809 2,978 3,156 3,346 3,546 3,759 3,985 4,224 Fuel 2441 2441 2441 2441 2441 2441 2441 2441 2441 2441 Oil, lube and filters 1000 1060 1124 1191 1262 1338 1419 1504 1594 1689 Tyres 600 0 600 0 600 0 600 0 0 Engine replacement 0 0 0 0 0 0 0 0 0 0 Transmission/differential 0 0 0 0 0 2500 0 0 0 0 Other Total 5941 6751 6374 7210 6860 10225 7406 8304 8020 8355 (v) Calculate the Equivalent Annual Cost/km for the operating cost disbursements. (1 mark) (vi) Calculate the total EAC/km for each vehicle, and present this graphically over a ten-year period. (1 mark) Determine the economic optimal life for each vehicle (1 mark) Should the company consider early disposal of these vehicles? (1 mark) Compare the minimum EAC/km for each vehicle. From an economic perspective Which vehicle is cheapest to operate? (1 mark) This practical is to be solved individually. Attach a copy of your spreadsheet calculations • Submit via Turnitin by 17:00 hrs on Friday 3rd May • Late penalty - 10% per day up to 7 days maximum, then zero marks. P. F. Knights 25-04-2024. 3/nSee Answer
Q20:Rapid City Radio Hall shows vintage movies each week. Customers arrive at the theater line at the rate of 70 per hour. The ticket seller averages 45 seconds per customer, which includes placing validation stamps on customers' parking lot receipts and punching their frequent watcher cards. (Due to these additional services, many customers don't get in until after the feature has started.) 1.) What is the average customer time in the system? (round to 2 decimal places) 2.) What would be the effect on customer time in the system of having a second ticket taker doing nothing but validations and card punching, thereby cutting the average service time to 25 seconds? (round to 3 decimal places) 3.) What would be the effect on customer time in the system of having a second ticket taker doing nothing but validations and card punching, thereby cutting the average service time to 25 seconds? (round to 3 decimal places) 4.) What would be the customer time in the system if a second window was opened with each ticket seller doing all three tasks? Note: Use closest X/u value from the attached Exhibit. Do not round intermediate calculations. Round your answer to 3 decimal placesSee Answer

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