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Question
A can do a certain job in 12 days.B is 60% more efficient than A. How many days does B alone take to do rhe same job?
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Answer
60% means 3/5 ; if we consider 8 unit work then A do 3 unit, B do 5 unit. so in 12 days A can do 60 unit of work, and this 60 unit can be done by B in 60/8 days i.e 7.5 Days Answer.
Answer
if A suppose 100% efficient than definetly B will be 160% efficient
so if A takes 1/12 days to do a piece of work than B alone can do it in
(160/100)*1/12 days that means 8/5*1/12 = 2/15
hence B can do it in 15/2 days that is 7.5 days
