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 these makes the most economic sense?

Ten people having two bottles each need 10 × 2 = 20 bottles. Choice A provides exactly 20 bottles for $30.00. Choice B provides 24 bottles for $20.00, while choice C provides 24 bottles for $18.50, so choice C is the lowest-cost option that provides enough soda. Choice D also provides enough, but costs $37.00.

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