求PREP-DS-1-204....

204.
                19682-!-item-!-187;#058&012407

On a certain sight-seeing tour, the ratio of the number of women to the number of children 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 children 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: C

我选的 E

疑惑: 问题求确切值, 但是2只给了一范围, 怎么求得的确切值呢?

从条件中1种得出，women:men = 25:22

那么women小于30，men又是整数，那只能是women 25, men 22

好像GMAT很喜欢考给一范围，然后又来一些苛刻的条件，使得最终值落在某个数上这类题，很头疼。