If A can complete a piece of work in 12 days and B is 60% more efficient than A, then in how many days will B complete the same work?

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B is 60% more efficient than A means B can do 160 units of work vs 100 units of work done by A in the same time means B can do same work in 100/160 time means answer is 12 x 100/160 = 7.5 days
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Work = A*12 B=1.6A work to be completed by B = Work/B = 12/1.6 =7.5days
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