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Bunuel
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If both cars travel same distance, we need to know their individual mileage to know which one used more gasoline

S1
No mileage info given
Insufficient

S2
Mileage is given, and is greater for A, so it consumed less gasoline
Sufficient

Answer B
Bunuel
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 63 miles per hour and 49 miles per hour, respectively.
(2) For the entire distance, car A traveled 32 miles per gallon of gasoline and car B traveled 27 miles per gallon of gasoline.


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