Mr. and Mrs. Atoll are planning a party for 10 people and want to make sure they have enough soda for everyone to have two bottles. Which of the following makes the most economic sense?

20 bottles of soda at $1.50 each

4 six-packs of soda at $5.00 each

one case of 24 sodas at $18.50

two cases of 24 sodas at $18.50 each

Given:

10 people

2 bottle each person

10 x 2 = 20 bottles

20 bottles of soda at 1.50 each: 20 * 1.50 = 30; unit cost = 1.50

4 six-packs of soda at 5 each : 4 * 5 = 20; unit cost = 20/24 = 0.83

one case of 24 sodas at 18.50; unit cost = 18.50/24 = 0.77

two cases of 24 sodas at 18.50 each; unit cost = 37/48 = 0.77

Mr. and Mrs. Atoll only need at least 20 bottles. It is more economical to buy one case of 24 sodas at 18.50.