GMAT Prep

[weirdude]

I can't figure out how to solve this. Please help! thanks.[/img]

[vantreal]

women: children = 5:2

(1) children : men = 5:11
-->insufficient, number of women/children is not even mentioned.

(2) number of women < 30
--> insufficient, women can be 5, 10, 15.... men is not mentioned here.

given + (1) + (2)
women: children: men = 25:10:22
it's say there are 25x of women, 10x of children and 22x of men,
(2) states the number of women is less than 30,
25x <30, and x has to be an integer, x then =1,
so the number of men will be 22 x 1 = 22

Answer: (C)

[weirdude]

got it!
thanks!

[adflyfish]

我想問 要如何知道這個團只有man woman and children
有可能還有其他人嗎? 例如 老人 = =
還是我多慮了

[kotokolin]

樓上真的想太多了....
就算車子裡面真的有老人也不影響，
因為已經知道比例women:man:chidren 又知道women< 30就可以算出men幾個
又沒叫我們算老人有幾個，對吧 :)