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Perctent Male

by aatech » Sat May 31, 2008 11:14 am
If the drama club and music club is combined, what percent of the combined membership is male

1) Of the 16 members of the drama club, 15 are male
2) Of the 20 members of the music club, 10 are male
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Source: — Data Sufficiency |
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by netigen » Sat May 31, 2008 1:04 pm
This is a poorly written question but given the information I would go with E.

We do not know if some members of the drama club are also members of the music club and vice versa hence E.
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by aatech » Sat May 31, 2008 4:32 pm
Ahhhh... That's a good point.. but that leaves us a lot to assume...

OA is E... and the question is out of GMAT PREP...
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by Stuart@KaplanGMAT » Sat May 31, 2008 8:55 pm
aatech wrote:Ahhhh... That's a good point.. but that leaves us a lot to assume...
The reason that E is correct is because we CANNOT make any assumptions.

We don't know if there's any overlap, so we have to look at cases in which overlap exists and in which it doesn't.

If there's no overlap, then together we'd have enough info. If there is overlap, then we don't have enough info to determine the exact percentage. Since there's a valid case in which we don't have enough info, the statements are insufficient.
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by pepeprepa » Sat Aug 23, 2008 2:52 pm
I understand what Stuart explained and find the question a little dubious. If some people have already come across this kind of trap, please give the question.
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