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If x - y > 10, is x y > x + y ?

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If x - y > 10, is x y > x + y ? [#permalink] New post 31 Jan 2010, 13:31
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Difficulty:

  55% (hard)

Question Stats:

55% (02:02) correct 45% (01:16) wrong based on 57 sessions
If x – y > 10, is x – y > x + y ?

(1) x = 8
(2) y = -20
[Reveal] Spoiler: OA
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Re: DS : inequality [#permalink] New post 31 Jan 2010, 13:56
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Status: Nothing comes easy: neither do I want.
Joined: 12 Oct 2009
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Location: Malaysia
Concentration: Technology, Entrepreneurship
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Re: DS : inequality [#permalink] New post 02 Feb 2010, 09:16
Mine also D

I have a question here, do we really get such simple questions in real Gmat?
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Re: DS : inequality [#permalink] New post 12 Mar 2010, 12:20
msand wrote:
If x – y > 10, is x – y > x + y ?
a. x = 8
b. y = -20

OA :
[Reveal] Spoiler:
D



stmt1: x = 8 => 8-y >10 => y<-2 so x - y is always going to be greater than 10 and x+y is always going to be less than 6 hence x-y>x+y proved
stmt2: y = -20 => x+20>10=> x>-10 => x-y is always greater than 10 and x+y is always greater than -30 so how this is suff?
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My debrief: done-and-dusted-730-q49-v40

Re: DS : inequality   [#permalink] 12 Mar 2010, 12:20
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