Target Test Prep Sample GRE Quantitative Comparison Problem
2x + 2y = – 4 and
We must determine the value of z to solve for both Quantity A and Quantity B. We are given two equations: 2x + 2y = –4 and .
With these two equations we can produce a unique value for z. The first equation can be reduced to
x + y = –2. We can substitute –2 for x + y in equation two to yield . Since z is negative, z2 is greater than z.
Thus, Quantity B is greater than Quantity A.