GRE- Quantitative Reasoning

QUESTION: 67

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): B
Explanation: Quantity A (ad) is a negative fractional number greater than a and approaching
zero (0). Similarly, Quantity B (bc) is a negative fractional number greater than b and
approaching zero (0). But ad must be less than cd (that is, further to the left than cd on the
number line). Why? If a and b were both multiplied by c (a positive number), the inequality
between a and b (a < b) would remain unchanged: ac < bc. It makes sense that if a is ultiplied
instead by a positive number D. that is greater than c, then the inequality between a and b not
only remains the same but actual y increases. In any event, ad < bc
QUESTION: 68

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.

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