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1. A works twice as fast as B. If B can complete a work in 12 days independently, the number of days in which A and B can together finish the work in :
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By: guest on 01 Jun 2017 05.49 pm
Ratio of rates of working of A and B = 2 : 1. So, ratio of times taken = 1 : 2. B's 1 day's work = 1 . 12 A's 1 day's work = 1 ; (2 times of B's work) 6 (A + B)'s 1 day's work = 1 + 1 = 3 = 1 . 6 12 12 4 So, A and B together can finish the work in 4 days.