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Director
Joined: 10 Feb 2006
Posts: 660

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22 Jun 2007, 06:41
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GMAT the final frontie!!!.

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VP
Joined: 08 Jun 2005
Posts: 1144

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22 Jun 2007, 07:18
If (X+Y) is negative we have to flip signs (i.e <) !!!

(X-Y) < 1*(X+Y)

but if (X+Y) is positive then:

X-Y > 1(X+Y)

using statements 1&2 will not help you find out if you have to flip the signs (i.e X+Y is greater or smaller then zero) hence the answer is (E)

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Manager
Joined: 15 Sep 2006
Posts: 94

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22 Jun 2007, 07:36
http://www.gmatclub.com/phpbb/viewtopic.php?t=47277

Try to do a search to avoid duplicate postings.

Hope it helps!

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22 Jun 2007, 07:36
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