GRE- Quantitative Reasoning
Answer(s): B
Explanation: You can make the comparison quickly by recognizing that Quantity A is the
"difference of two squares" (
) in the factored form (x + y) (x - y), where y = 2. Or, you
can multiply the two binomials in Column A, and then simplify:
Quantity A < Quantity B.

QUESTION: 10

A. The quantity in Column A is greater;
B. The quantity in Column B is greater;
C. The quantities are equal;
D. The relationship cannot be determined from the information given.

Answer(s): A
Explanation: Q percent is based on $100. Therefore, Q percent = Q dol ars, and Quantity B wil
always be $1 less than Quantity A.

QUESTION: 11

A. The quantity in Column A is greater;
B. The quantity in Column B is greater;
C. The quantities are equal;
D. The relationship cannot be determined from the information given.

Answer(s): C
Explanation: x + y + the measure of the third interior angle (let's call it w) = 180. Also, w + z =
180 (because their angles combine to form a straight line). So, you have two equations: x + y +
w = 180 or x + y = 180 ? w
w + z = 180 or z = 180 ? w Therefore, x + y = z (Quantity A = Quantity B)

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