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Weird DS Question

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Source: — Data Sufficiency |
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by gurudev » Sun Sep 07, 2008 12:54 am
The answer must be C, because:

Let assume that the college has
Males: 100M
Females: 100F
Total: 100M+100F

A) 33M + 20F = another college...(we donot have the data how many are from other college).. Hence in sufficient.

B) 25M+25F= another college.... again we donot have the data(breakup) of the other college..hence in sufficient.

Now combining both of them we have:
33M + 20F = 25M+25F
9M=5F

The ratio can be calculated now...

Hence the anwer is C..
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by parallel_chase » Sun Sep 07, 2008 12:58 am
gurudev wrote: 33M + 20F = 25M+25F
It be nice if you could explain the above,

shouldn't this be

33M + 20F = 25% of entire graduating class.

Thanks
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by gurudev » Sun Sep 07, 2008 1:06 am
25 % of entire graduating class.

Now we have assumed that entire graduting class= 100M + 100F.

So, 25 % of entire graduating class comes to be = 25M + 25F...Hope this helps..
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by flystud777 » Sun Sep 07, 2008 11:57 am
thanks for the input!
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