GMATPrep question

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MonicaKhan
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Topic: GMATPrep question

Sun Apr 22, 2007 4:33 pm

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Any help on the following question would be greatly appreciated. Thank you.

If x and y are integers and x > 0, is y > 0?

(1) 7x - 2y > 0
(2) -y < x

I think both statements are independently sufficient to answer the question, and so I believe the answer is D, but the answer is apparently E.

jayhawk2001
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Sun Apr 22, 2007 6:27 pm

MonicaKhan wrote: Any help on the following question would be greatly appreciated. Thank you. If x and y are integers and x > 0, is y > 0? (1) 7x - 2y > 0 (2) -y < x I think both statements are independently sufficient to answer the question, and so I believe the answer is D, but the answer is apparently E. 1 - insufficient. 7x-2y > 0 7x > 2y y < 7x/2 x is positive, so y can take either positive or negative values 2 - insufficient. -y < x y > -x Take x = 2, y can take -1 or +1. Hence insufficient So, E is the answer.