Ratio

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Ratio

by didieravoaka » Sat Apr 23, 2016 7:22 am
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Thanks to help.

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by [email protected] » Sat Apr 23, 2016 9:42 am
Hi didieravoaka,

There was a discussion of this question here:

https://www.beatthegmat.com/ratio-of-women-t275719.html

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by OptimusPrep » Sun Apr 24, 2016 8:21 pm
didieravoaka wrote:Image

Thanks to help.
Given: W: M: C = 5: 2: 7
Assume the W = 5x, M = 2x and C = 7x

Required: Total people in the room?

Statement 1: W + C = 12
Hence 5x + 7x = 12
x = 1
Therefore W = 5, M = 2 and C = 7
Total = 14
SUFFICIENT

Statement 2: M < 4
Since we have people here, they cannot be represented in decimals.
We know that M = 2x and M < 4
Therefore M can only be 2
and x = 1
Total people = 5 + 2 + 7 = 14
SUFFICIENT

Correct Option: D

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