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标题: 求GWD一道 [打印本页]

作者: shijiu86 时间: 2008-1-7 20:50
标题: 求GWD一道

题目没看明白,望高手解答,在线等,谢谢.

On a certain transatlantic crossing, 20 percent of a ship’s passengers held round-trip tickets and also took their cars abroad the ship. If 60 percent of the passengers with round-trip tickets did not take their cars abroad the ship, what percent of the ship’s passengers held round-trip tickets?

A. 33 1/3%

B. 40%

C. 50%

D. 60%

E. 66 2/3%

Answer:

作者: LEECA 时间: 2008-1-7 21:21
这个题目的意思是说60%有ROUND-TRIP的票他们不带车，言下之意就是40%的ROUND-TRIP的人是带车的。也就是说40%round-trip的人相当于总旅客书的20%。20%/40%就是全部ROUND-TRIP的旅客占总的比例了等于50%

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