GRE- Quantitative Reasoning

and Quantity B is y in the equation
You can easily see that x = 2.5 and that y =
2.5.

QUESTION: 42

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: Wheel B's radius, and therefore its circumference as well, is 50 times greater than
Wheel A's (3:150 = 1:50). In order to travel as far each minute as Wheel A travels per hour,
Wheel B's circumference would need to be 60 times greater (since there are 60 minutes per
hour), but it's not that big. Thus, Wheel A travels further in one minute than Wheel B does in one
hour. (The number of revolutions per minute is not relevant, since the rotation rate is the same
for both wheels.)

QUESTION: 43

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): D
Explanation: Al terms on both sides cancel out:

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