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Is x+y >0? 1) x/(x+y)>0 2) y/(x+y)>0

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Is x+y >0? 1) x/(x+y)>0 2) y/(x+y)>0 [#permalink] New post 12 Feb 2006, 02:42
Is x+y >0?
1) x/(x+y)>0
2) y/(x+y)>0
Director
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 [#permalink] New post 12 Feb 2006, 03:37
from A)
X>0 and X+Y>0 OR
X<0 and X+Y<0
From B)
Y>0 and X+Y>0 OR
Y<0 and X+Y<0
so A) is insuff and B) is insuff
both together are also insuff
E)
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 [#permalink] New post 12 Feb 2006, 19:42
1) x/(x+y) > 0

If x = -2, y = -8, then -2/-10>0 --> x+y < 0
If x = 2, y = 8, then 2/10>0 --> x+y < 0

Insufficient.

2) Same argument as A.

Using 1) and 2),
Doesn't help. same working as st1 and st2.

Ans E
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Re: inequality [#permalink] New post 13 Feb 2006, 17:42
joemama142000 wrote:
Is x+y >0?
1) x/(x+y)>0
2) y/(x+y)>0


E

(1) x or (x+y) could be both -ve or both +ve. Insufficient
(2) Same thing as (1). Insufficient

(1) + (2) Insufficient
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Re: inequality   [#permalink] 13 Feb 2006, 17:42
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