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by Anurag@Gurome » Mon Dec 05, 2011 9:40 pm
karthikpandian19 wrote:If 7 workers can build 7 cars in 7 days, then how many days would it take 5 workers to build 5 cars?

(A) 1 (B) 5(C) 7(D) 25(E) 351.
7 workers can build 7 cars in 7 days.
1 worker can build 7 cars in 7*7 = 49 days
1 worker can build 1 car in 49/7 = 7 days
1 worker can build 5 cars in 5*7 = 35 days
5 workers can build 5 cars in 35/5 = 7 days

The correct answer is C.
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