A glass of skim milk supplies 0.1 mg of iron and 8.6 g of protein. A quarter pound of
lean meat provides 3.5 mg of iron and 24 g of protein. A person on a special diet is to
have 7.5 mg of iron and 91.0 g of protein. How many glasses of skim milk and how
many quarter-pound servings of meat will provide this?