GPREP -4 -DS-4

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by GMATGuruNY » Tue Jul 22, 2014 3:24 am
abhasjha wrote:Image
The table indicates that m = d+z and that n = e+y.
Thus, m+n = d+z+e+y.
Question rephrased:
What is the value of d+e+y+z?

Statement 1: d+y = -3
No information about e and z.
INSUFFICIENT.

Statement 2: e+z = 12
No information about d and y.
INSUFFICIENT.

Statements combined:
Adding together the 2 equations, we get:
(d+y) + (e+z) = -3+12
d+e+y+z = 9.
SUFFICIENT.

The correct answer is C.
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