Final answer:
To make two lemon pies, each requiring half a cup of lemon juice, one must purchase 8 lemons at $0.39 each, totaling $3.12.
Step-by-step explanation:
To calculate the cost to buy enough lemons to make two 9-inch lemon pies requiring half a cup of lemon juice each, we first need to know how many tablespoons are in a cup, then figure out how much juice is needed for two pies, and finally how many lemons to purchase.
Conversion and Calculation
There are 16 tablespoons in one cup, so half a cup contains 8 tablespoons. For two pies, we need 2 × 8 tablespoons = 16 tablespoons of lemon juice. As each lemon gives 2 tablespoons, we need 16 ÷ 2 = 8 lemons in total.
Cost Calculation
At $0.39 per lemon, the cost for 8 lemons is 8 lemons × $0.39 each = $3.12. Therefore, it will cost $3.12 to buy enough lemons for the lemon juice required in two lemon pies.