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Question

A can do a certain job in 12 days. B is 60% more efficient then A. Find the number of days take by B to finish the job.

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Solution

According to the question, A can do a job in 12 days, which means A can do one-twelfth of total work in one day.

So, As one day work is equal 112

B is 60% more efficient than A.

So, B can do 60% more work than what A does in one day.

BS one day work is equal to 112+60%

i.e., 112+120, which is 60.

560+360=86017.5

So, B can do the same work in 7.5 days or 7 days and 12 hours.

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