d/s variables : GMAT Problem Solving (PS)
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d/s variables

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Manager
Joined: 04 Feb 2011
Posts: 63
Location: US
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Kudos [?]: 118 [0], given: 42

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08 Mar 2011, 22:07
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25% (medium)

Question Stats:

100% (01:30) correct 0% (00:00) wrong based on 7 sessions

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If n + k = m, what is the value of k?
(1) n = 10
(2) m + 10 = n
[Reveal] Spoiler: OA
Manager
Joined: 14 Feb 2011
Posts: 196
Followers: 4

Kudos [?]: 128 [1] , given: 3

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08 Mar 2011, 22:13
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KUDOS
Lolaergasheva wrote:
If n + k = m, what is the value of k?
(1) n = 10
(2) m + 10 = n

Statement 1, n=10 gives us 10+k = m, so k can be anything depending on value of m, so insufficient

Statement 2, m+10=n when put in the stem gives us m+10+k=m or k+10 = 0 or K=-10. So, sufficient.

Re: d/s variables   [#permalink] 08 Mar 2011, 22:13
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