Some parents shopping for their family want to know how much hamburger and how many potatoes to buy. From a food-valur table they find that one ounce of hamburger has 7 mg of iron, 10 units of vitamin A, and
65 grams of protein. One medium potato has 1.3 mg of iron, 5 units of vitamin A, and 6.2 grams of protein. For this meal the parents want to serve at least 5 mg of iron, 30 units of vitamin A, and 35 grams of protein.
One potato costs $0.15 and 1 ounce of hamburger conts $0.27. The parents want to be economical (minimize their costs), yet meet daily requirements. They need a program for the quantity of hamburger and potatoes
to buy for the family.