A can do a piece of work in 12 days. B is 60% more efficient than A. The number of days, it take B to do the same piece of work is?

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Accepted Answer

A's 1 day's work = 1/12 B's 1 day's work = 1/12 + 60% of 1/12 = 1/12 x 160/100 = 2/15 ∴ B can do the work in 15/2 days = 71/2 days.

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