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I did not find the discussions of this problem on forum.

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Director
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I did not find the discussions of this problem on forum. [#permalink] New post 18 Apr 2007, 15:03
00:00
A
B
C
D
E

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(N/A)

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0% (00:00) correct 0% (00:00) wrong based on 0 sessions
I did not find the discussions of this problem on forum. Does anybody have clues to it?
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Manager
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 [#permalink] New post 18 Apr 2007, 15:09
Answer is D -

2*x - 2*(x-2) = 2*(x-2) (2*2 -1)
= 3.2*(x-2)

* indicates pow.
Hence -

2*(x-2) = 2*13
Therefore, x=15
  [#permalink] 18 Apr 2007, 15:09
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