A can complete a certain job in 12 days. B is 60% more efficient than A. In how many days can B complete the same job?
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b will complete the work in 4.8days
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B is 60% more efficient than A, means that the rate of B is 1.6 times as greater as that of A
So if A can complete the job in 12 days, then B complete the same job in 12/1.6 = 12/(8/5) = 15/2 = 7.5 days.
So if A can complete the job in 12 days, then B complete the same job in 12/1.6 = 12/(8/5) = 15/2 = 7.5 days.
RohitKumar20:
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