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A works twice as fast as B. If both of them can together finish a piece of work in 12 days. Then B alone can do it in24 days27 days36 days48 days |
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Answer» we know that, Work done by A in 1 day = 2x Let us consider work done by B in 1 day = x Number of days A and B together required to complete a piece of work = 12 days Now, work done by both A and B together in 1 day= 1/12 ∴ 2x + x = 1/12 3x = 1/12 x = 1/36 ∴ B can do work in 36 days |
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