Question
P and Q together can complete a
certain task in 45 days. P can finish the task alone in 75 days. How many days will it take for Q to complete the task alone?Solution
ATQ, Let the time taken by Q to do the work be 'x' days. 
So, x = (225/2) = 112.5 So, Q alone can do the work in 112.5 days
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