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# Is x-y > y-x ??? 1) x+y > 0 2) x < 0

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Senior Manager
Joined: 22 Sep 2005
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Is x-y > y-x ??? 1) x+y > 0 2) x < 0 [#permalink]

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01 Nov 2006, 06:36
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Is x-y > y-x ???

1) x+y > 0

2) x < 0
VP
Joined: 25 Jun 2006
Posts: 1167
Followers: 3

Kudos [?]: 157 [0], given: 0

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01 Nov 2006, 07:02

it is asking whether x > y.

each is not sufficient.

Together: x < 0 and x > -y, then -y < 0. then y > 0.
so x > y is always wrong. so Suff.
SVP
Joined: 05 Jul 2006
Posts: 1747
Followers: 6

Kudos [?]: 358 [0], given: 49

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01 Nov 2006, 14:34
Is x-y > y-x ???

1) x+y > 0

2) x < 0

FROM STEM

IS X-Y-Y+X>0 ie is 2x-2y>0 thus is x-y>0 thus is x>y

from one

x+y >0 .........not suff

from two

x< 0 ie -ve.......not suff

both

x is -ve and x+y is positive then y>x ...suff my answer is C
Director
Joined: 06 Sep 2006
Posts: 740
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Kudos [?]: 40 [0], given: 0

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01 Nov 2006, 14:46
From Stem:

x + x < y + y; 2x > 2y;

x > y ---U

1) Insufficient.
2) InSufficient.

Combining:
since x is -ve y has to be +ve to satisfy (1) x+y > 0. SO y > x

C.
01 Nov 2006, 14:46
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