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Intern
Joined: 29 Mar 2006
Posts: 27
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sorry heres the attachment [#permalink]  25 May 2008, 19:32
sorry heres the attachment
Attachments

8.doc [78.5 KiB]

SVP
Joined: 29 Aug 2007
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Re: gmat prep [#permalink]  25 May 2008, 21:17
chengliu wrote:
sorry heres the attachment

m - j = 2m - 2k
2k = 2m - m + j
2k = m + j

from 1: j = 30,000
2k = m + j
2k = m + 30,000
do not know m and k or m+k
nsf....

from 2: k = 40,000
2k = m + j
2(40,000) = m + j
80,000 = m + j

avg.. = (m+j+k)/3 = (80,000 + 40,000) /3 = 400,000 suff............
B.
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Director
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Re: gmat prep [#permalink]  25 May 2008, 21:19
-1

common, you don't need to attach the whole doc file, just attach the picture
VP
Joined: 18 May 2008
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Re: gmat prep [#permalink]  25 May 2008, 21:57
M-J=2(M-K)
M+J-2K=0
M+J+K-3K=0
(M+J+K)/3=K
So if we know Kate's salary, we can know the average of three salaries. This is given in 2nd staement so B is the answer

chengliu wrote:
sorry heres the attachment
Intern
Joined: 29 Mar 2006
Posts: 27
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Re: gmat prep [#permalink]  25 May 2008, 22:05
thank you everyone, that was very helpful
Re: gmat prep   [#permalink] 25 May 2008, 22:05
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