The following table shows the number of trucks of canned food that must be delivered monthly to each market and the shipping costs per truck from each distribution warehouse to each market (prices are $/truck): Maximum monthly Market Toronto Ottawa London Mississauga Supply (trucks) W1 464 513 654 867 100 W2 352 416 690 791 100 W3 995 682 388 685 100 Demand 80 65 70 85 (trucks) Answer the following questions by creating and solving a model in Excel: Q1. What is the optimal solution to this problem? Q2. What is the total monthly shipping cost for this plant? Q3. If the maximum supply by W1, W2 and W3 changes to 50, 200, 100 respectively, how do the optimal solution and total monthly costs change?