Mathematics > Standard Multiple Choice

Read the following SAT test question and then click on a button to select your answer.

A woman drove to work at an average speed of 40 miles per hour and returned along the same route at 30 miles per hour. If her total traveling time was 1 hour, what was the total number of miles in the round trip??

(A) 30
(B)? (C)? (D) 35
(E) 40

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