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标题: prep百思不得其解的一道题？？？？ [打印本页]

作者: ziwingfong 时间: 2007-7-5 06:46 标题: prep百思不得其解的一道题？？？？

on a certain sight-seeing tour,the ratio of the number of the women to the number of the chidern was 5 to 2,what was the number of men on the sight-seeing tour?

1) on the sight-seeing tour, the ratio of the number of chidren to the number of men was 5 to 11

2) the number of women on the sight-seeing tour was less than 30

答案是 C

我选的E

由LESS THAN 30怎么能得出确定的 the number of men

求解释

作者: missdandan 时间: 2007-7-5 13:51

1. 根据ratio, women:children:men = 25:10:22

1+2. 因为women小于30人，人为整数，则women只能为25,men为22

作者: ziwingfong 时间: 2007-7-6 06:36

thanks!!!

作者: lxj19820127 时间: 2007-7-7 08:22

most hate this kind of question, like the stampts one, very easy to make mistake

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