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From the question - x-y > x+y or x-x > y+y or 0 > 2y or y < 0

Given that x-y > 10 or y < x-10

so, to answer if we need to know if y < 0 in the equation above y < x-10 if x = 8, then x-10 = -2, this satisfies y < 0 if y = -20, then this also satisfies y < 0

If we are to find whether x-y>x+y...This comes down to -Y>+Y or Y is negative. for 1) x=8 and x-y>10 => y<-2 ALWAYS negative.SUFFICIENT. 2) Y=-20 Always Negative. SUFFICIENT.

Both A and B are sufficient independently.
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Re: If x - y > 10, is x - y > x + y ? [#permalink]

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04 Sep 2014, 11:41

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