Wednesday, February 24, 2010

GRE Math Problem 33


 In a certain company, the ratio of the number of women employees to the number of men employees is 3 to 2. If the total number of employees is 240, then how many of the employees are men?
(A) 40
(B) 48
(C) 96
(D) 144
(E) 160


Solution for GRE Math Problem 32:
The surface area of the cube with edge of 3 is 6x32=54 square inches. The surface area of the smaller cube with the edge of 1 will be 6x12=6 square inches. From one cube 3x3x3 we'll get 33=27 cubes 1x1x1, their total surface area will be 27x6=162 square inches. the unpainter area is 162-54=108<100
Answer:Column A is greater.


See also these GRE problems:

Posted by Alexey Izvalov at 1:09 PM
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2 comments:

  1. AnonymousAugust 22, 2011 at 1:32 AM

    i thought 9*6=54

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  2. Alexey IzvalovAugust 22, 2011 at 11:10 AM

    Thank you very much for the correction, I was inattentive. By the way, this is the major flaw of the testing system: even mistaken in calculations, I received the correct answer.

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