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GMATPREP : INEQUALITY

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Source: — Data Sufficiency |
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by ksh » Thu Jul 10, 2008 3:01 am
This is bit tricky question

ques is x-y>10 , is (x-y)>(x+y)


stem1. x=8 so, 8-y>10 or y<2> 8-3--- true so, sufficient

Stem2. y=-20 so, x>-10
plug the value by taking x=-9
-9+20>-9-20--- true sufficient

Hence D
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Re: GMATPREP : INEQUALITY

by olika » Thu Jul 10, 2008 7:52 am
Hi,
it's easy to solve when you modify the equations :)

x-y>10 means x-10>y
x-y>x+y means y<0. That's what you need to find: is 'y<0'?

1) x=8. Then 8-10>y, y<-2. So, y<0. Statement (1) is sufficient.

2) y=-20. So, y<0. Statement (2) is sufficient, too.
Answer is D.
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