Data Sufficiency

[Data Sufficiency] 试题详情

In planning for a trip, Joan estimated both the distance of the trip, in miles, and her average speed, in miles per hour. She accurately divided her estimated distance by her estimated average speed to obtain an estimate for the time, in hours, that the trip would take.  Was her estimate within 0.5 hour of the actual time that the trip took?
(1) Joan's estimate for the distance was within 5 miles of the actual distance.
(2)   Joan's estimate for her average speed was within 10 miles per hour of her actual average speed.

Options:

Correct:

E

Data Sufficiency

2评分
230浏览

[点此查看答疑][GWD]Data Sufficiency

条件问题完全没看懂,什么叫做估计的路程在实际路程的5米内… 没下手的思路
0评分
172浏览

[点此查看答疑][GWD]Data Sufficiency

选了C,做的时候就觉得有陷阱,但没看出来陷阱在哪里= =
2评分
230浏览

[点此查看答疑][GWD]Data Sufficiency

条件问题完全没看懂,什么叫做估计的路程在实际路程的5米内… 没下手的思路
0评分
172浏览

[点此查看答疑][GWD]Data Sufficiency

选了C,做的时候就觉得有陷阱,但没看出来陷阱在哪里= =

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