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

A train traveling miles per hour for hour covers the same distance as a train traveling miles per hour for how many hours?

(A) 3
(B) 2
(C) 1
(D) 1/2
(E) 1/3

来源:可可英语 http://www.kekenet.com/sat/201404/287339.shtml