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is (x-y)/(x+y)>1

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Source: — Data Sufficiency |
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by tohellandback » Mon Aug 31, 2009 7:47 pm
IMO E

1) x>0
we need to know about Y
ex: x=10 Y=-8
(x-y)/(x+y) is 9
when x=10 y=-20
(x-y)/(x+y) is negative

NOT SUFF
2) Y<0
take the same cases as above
NOT SUFF
combined
again take the same cases as above

NOT SUFF
The powers of two are bloody impolite!!
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