Solve the following problem using Excel Solver: Joe's Foods delivers fresh sandwiches each morning to vending machines throughout the city. The company makes three kinds of sandwiches---ham and cheese, bologna, and chicken salad. A ham and cheese sandwich requires a worker 0.49 minutes to assemble, a bologna sandwich requires 0.41 minutes, and a chicken salad sandwich requires 0.45 minutes to make. The company has 12.5 hours available each night for sandwich assembly. Vending machine capacity is available for 2,200 sandwiches each day. The selling price for a ham and cheese sandwich is $1.33, the selling price for a bologna sandwich is $1.41, and the selling price for a chicken salad sandwich is $1.35. The cost of making these sandwiches is $0.45 per sandwich. Customers need a variety of sandwiches available, so metro stocks at least 250 of each. Metro management wants to know the following: ba) How many of each sandwich should they stock? b) If the company could hire a worker and increase the assembly time by 400 minutes, or increase its vending machine capacity by 100 sandwiches, both at no additional cost, which of the two should it do? Why