Home » GMAT » How many hours will it take 12 beavers that work at the same pace, to build the same dam?
20 beavers, working together in a constant pace, can build a dam in 3 hours. How many hours will it take 12 beavers that work at the same pace, to build the same dam?
A. 5.
B. 2.
C. 8.
D. 4.
E. 6.
Correct Answer: A
Explanation/Reference:
Explanation:
20 beavers worked 3 hours; therefore 60 hours of work were needed to build the dam. 60 hours / 12 beavers = 5 hours of work to complete the same dam.
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