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Source: — Data Sufficiency |
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by cramya » Wed Mar 25, 2009 5:52 pm
I would go with C

Stmt I

e+d = -12

d can be positve or negative

INSUFF

Stmt II

e-d < -12

e < d-12

d again can be positive or negative

INSUFF

Together:

e+d=-12
d = -12-e

e-d<-12
e- (-12-e)<-12

e+12+e<-12

2e < -24
e < -12

d has to be positive if e+d = -12
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by rs2010 » Wed Mar 25, 2009 6:58 pm
A does not give any info about d
B does not give any info about d


combining both give a value of d, which is reducing a value of e such that it is becoming less than -12 as per eqn 1. So d is positive number

Ans C
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