4. (13 points) A 100-gallon tank contains water at a temperature of 208° Water, at a temperature of 43.8°F is supplied to the tank. Water at 208°F leaves the tank

and is mixed with 43.8°F water to make 68 gpm of 152.4°F water used in a pickling operation. Calculate: 1. The flow rate of 208°F and 43.8°F water required to make the 68 gpm of 152.4°Fwater. . The flow rate of 43.8°F water required to replenish the tank if the only use is the pickling operation. 3. The total flow rate of 43.8°F water required for the system. 4. The final temperature of the water in the tank if no other heat is added or lost during a one minute period of time.