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D's Negativity

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chaouky
 Post subject: D's Negativity
 Post Posted: Fri Apr 08, 2011 5:32 am 
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Students


Posts: 3
Is d negative?

(1) e + d = -12

(2) e – d < -12


I clearly get 1. Insufficient and 2. Insufficient

For 1+2 can we write this :

e-d < e+d
so,
-d < d
0 < 2d
0 < d
meaning that d is positive ?

is that possible? I feel like this method is wrong somewhere ...
Any Help ?

Thanks !!
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jnelson0612
 Post subject: Re: D's Negativity
 Post Posted: Wed Apr 13, 2011 3:17 pm 
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ManhattanGMAT Staff


Posts: 1857
This looks good to me--what is the original answer? I worked it a different way and also got C, since d is positive when combining the two statements.

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Jamie Nelson
ManhattanGMAT Instructor
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