prep数学题，牛牛看下，谢谢解答2

anistonlucky

1        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

 

Answer  c

我选的 E，我只算出来了  m<26又2/5

但是算不出下线，所以觉得不能确定，牛牛的意见呢？

sourceme

男、女、儿童都是整数，而根据题干和条件一知道，儿童肯定是10的倍数。

儿童10：女25；

儿童20：女50。

所以根据条件二知道，肯定是儿童10，女25，男22。

anistonlucky

牛牛，谢谢啊，这题明白了