22. Suppose that we are given the following matrices involving the costs of fruits at different stores, the amounts of fruit different types of people want, and the numbers of people of different types in different towns. Apple Orange Pear Town 1 Town 2 Store A Store B .10 .15 .10 [ Person A 1000 2000 {] .15 .20 .10 Person B 500 1000 Person A Person B ] Apple Orange 5 10 5 [ 4 Pear 3 5 ] (a) Compute a matrix that tells how much each person's fruit purchases cost at each store. (b) Compute a matrix that tells how many of each fruit will be pur- chased in each town. (c) Compute a matrix that tells the total cost of everyone's fruit pur- chases in town 1 and in town 2 when people use store A and when they use store B (a different number for each town and each store).

Fig: 1