Q35
Stations X and Y are connected by two separate, straight, parallel rail lines that are 250 miles long. Train P and train Q simultaneously left Station X and Station Y, respectively, and each train traveled to the other’s point of departure. The two trains passed each other after traveling for 2 hours. When the two trains passed, which train was nearer to its destination?
(1) At the time when the two trains passed, train P had averaged a speed of 70 miles per hour.
(2) Train Q averaged a speed of 55 miles per hour for the entire trip.
A. Statement (1) ALONE is sufficient, but statement (2) alone is not sufficient. B. Statement (2) ALONE is sufficient, but statement (1) alone is not sufficient.
C. BOTH statements TOGETHER are sufficient, but NEITHER statement ALONE is sufficient.
D. EACH statement ALONE is sufficient.
E. Statements (1) and (2) TOGETHER are NOT sufficient.
答案是C
我的答案是A
(1) At the time when the two trains passed, train P had averaged a speed of 70 miles per hour.
相遇的时候P走了140 miles，这样Q走了250-140=110 mile 可以判断P was nearer to its destination
(2) Train Q averaged a speed of 55 miles per hour for the entire trip.
判断不出相遇前Q是以什么速度走的，也无法知道走了多远。
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