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# If the drama club and music club are combined, what perecent

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Intern
Joined: 11 Dec 2008
Posts: 22
If the drama club and music club are combined, what perecent [#permalink]

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03 Jan 2009, 10:29
This topic is locked. If you want to discuss this question please re-post it in the respective forum.

I am sure I have missed something with this q...help.

If the drama club and music club are combined, what perecent of the combined membership will be 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.
SVP
Joined: 29 Aug 2007
Posts: 2453

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03 Jan 2009, 12:14
UnknownPhD wrote:
I am sure I have missed something with this q...help.

If the drama club and music club are combined, what perecent of the combined membership will be 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.

E. total number of member of either drama or music club is given.

Do we know by any means that the total members in drama club are 16? 20 in music club?
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VP
Joined: 05 Jul 2008
Posts: 1373

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03 Jan 2009, 15:23
Q is testing the set union.

For us to know the combined membership we need to know the set intersection.

DUM = D + M - (D n M)

only D & M are given (D n M) is unknown. Hence E
Re: Combined Membership   [#permalink] 03 Jan 2009, 15:23
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# If the drama club and music club are combined, what perecent

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