The store is selling lemons at $0.69 each. Each lemon yields about 2 tablespoons of juice. How much will it cost to buy enough lemons to make three 9-inch lemon pies,each requiring half a cup of lemon juice?
You need 24 Tablespoons to make 3 of the pies. And each lemon has 2 tablespoons. So you need 12 lemons to make them. Multiply 12 by 0.69 and you get your final answer.
