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DS- GMAT Prep [#permalink] New post 21 Jun 2006, 22:42
00:00

Question Stats:

0% (00:00) correct 0% (00:00) wrong based on 0 sessions
I understand that one does not need to solve for the exact value of DS questions but I'm not sure how one would go about solving this particular question. Thoughts?

Thanks,
Tru
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 [#permalink] New post 22 Jun 2006, 05:03
x + y = 4000 ...from (1)
3x + 5y = 15,000 ...from (2)

Hence C
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 [#permalink] New post 22 Jun 2006, 05:29
C

(Fx5)+((4000-F)x3)=15000
5F+12000-3F=15000
2F=3000
F=1500
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 [#permalink] New post 22 Jun 2006, 09:53
I was thrown off by the "average" being in there. I thought one needed hard numbers to solve this equation. Guess not.

Thanks for the input :-D

-Tru
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 [#permalink] New post 22 Jun 2006, 09:59
Given # of books sold = 15000

S1: Given # of attendees = 4000; Not Sufficient.
S2: Given 3m+5f = 15000; Need another equation to solve this

S1 & S2 : m+f = 4000, 3m+5f =15000 Can Solve. Sufficient.

Answer : C
  [#permalink] 22 Jun 2006, 09:59
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