Two Cars, A and B, Each Traveled a Distance of 200 Miles GMAT Data Sufficiency

Question: 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.

1. Statement (1) ALONE is sufficient, but statement (2) alone is not sufficient.
2. Statement (2) ALONE is sufficient, but statement (1) alone is not sufficient.
3. BOTH statements TOGETHER are sufficient, but NEITHER statement ALONE is sufficient.
4. EACH statement ALONE is sufficient.
5. Statements (1) and (2) TOGETHER are not sufficient.

Correct Answer: B
Solution and Explanation:
Approach Solution 1:
(1) 1 provides us the speed. We have the distance and the speed. Therefore we can calculate the time. However the questions asks did car A use more gasoline than car B. Therefore 1 is insufficient
(2) 2 provides us the miles per gasoline. Therefore we can calculate car A and car B gasoline and determine whether car A used more gasoline than car B. Sufficient.

Approach Solution 2:
(1) mileage efficiency not known....insuff
(2) fuel used by A =200/32 gallon
fuel used by B =200/27 gallon
Thus A>B
“Two cars, A and B, each travelled a distance of 200 miles. Did car A”- is a topic of the GMAT Quantitative reasoning section of GMAT. GMAT Quant section consists of a total of 31 questions. GMAT Data Sufficiency questions consist of a problem statement followed by two factual statements. GMAT data sufficiency comprises 15 questions which are two-fifths of the total 31 GMAT quant questions.

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