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Two cars, A and B, each traveled a distance of 200 miles. Did car A use more gasoline than car B?

(1) Cars A and B traveled the entire distance at the rates of 48 miles per hour and 44 miles per hour, respectively.
NOT SUFFICIENT. We don't know anything about usage of gasoline.

(2) The car traveling faster burned more gasoline per mile.
NOT SUFFICIENT. W don't know about the speed of cars.

Combining both 1 and 2, SUFFICIENT.
From 1 we can find the speed, and 2 says that car travelling faster burned more gasoline per mile, so we can find the answer.

COORECT ANSWER: C
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