The snack bar makes two kinds of sandwiches. Chicken sandwich takes six minutes to cook and two minutes to put on the bun with lettuce, tomato, and mayonnaise. Hamburger takes four minutes to cook and three minutes to put on a bun with lettuce, tomato, and mustard.
a) Find number of hamburgers and chicken sandwiches can be produced if forty minutes is spent on cooking and 20 minutes on preparing sandwiches?
b) Find number of hamburgers and chicken sandwiches can be made with 35 minutes is spent on cooking and 25 minutes on preparing the sandwiches?
c) How many with 45 minutes spent on cooking and 15 minutes spent on preparing the sandwiches?