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GMATprep practice question:explain please

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GMATprep practice question:explain please [#permalink] New post 25 Apr 2009, 14:13
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Can somebody please explain the answer?
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Re: GMATprep practice question:explain please [#permalink] New post 26 Apr 2009, 09:45
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hi pma,

Given Women:Children = 5:2

1) Children:Men = 5:11 -----> Cannot determine # of men because total number of ppl/men/women/Child is not given.
However, we can get a combined ratio of Women:Child:Men, which is 25:10:22
How did I get this - Multiply 5:2 ratio with 5, which equals = 25:10
Multiply the ratio 5:11 with 2, which equals = 10:22
Combining both, 25:10:22

2) Women<30
-----> This ratio doesn't give any information about number of Men.
Therefore, this info is not enough by itself for the answer.



Combing both Statements:
The ratio 25:10:22 is in its simplest form and the next higher form is 50:20:44, which cannot be because Women<30
Thus, Women = 25, Child = 10, Men = 22.

Answer C
Hope it helps.
Re: GMATprep practice question:explain please   [#permalink] 26 Apr 2009, 09:45
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