Data Sufficiency
试题详情
题目：
If Car X followed Car Y across a certain bridge that is 
mile long, how many seconds did it take Car X to travel across the bridge?
(1)Car X drove onto the bridge exactly 3 seconds after Car Y drove onto the bridge and drove off the bridge exactly 2 seconds after Car Y drove off the bridge.
(2)Car Y traveled across the bridge at a constant speed of 30 miles per hour.
mile long, how many seconds did it take Car X to travel across the bridge?(1)Car X drove onto the bridge exactly 3 seconds after Car Y drove onto the bridge and drove off the bridge exactly 2 seconds after Car Y drove off the bridge.
(2)Car Y traveled across the bridge at a constant speed of 30 miles per hour.
选项:
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:
C
