Problem:
When Walter drove up to the gasoline pump, he noticed that his gasoline tank was full. He purchased gallons of gasoline for . With this additional gasoline, his gasoline tank was then full. The number of gallons of gasoline his tank holds when it is full is
Answer Choices:
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Solution:
The gasoline tank going from to full represents an increase of tank. Since half a tank is gallons, it follows that a full tank is gallons.
Answer: .
The problems on this page are the property of the MAA's American Mathematics Competitions