A can do a piece of work in 25 days


Asked by admin @ in Math viewed by 300 People


A can do a piece of work in 25 days and B can finish it in 20 days. They work together

for 5 days and then A leaves. In how many days will B finish the remaining work?

Answered by admin @



A can do a piece of work in 25 days

⇒ A can do a work of W/25 in one day

B can do a piece of work in 20 days

⇒ B can do a work of W/20 in one day

given the both work 5 days

5 days work of both A and B is 5W/25 + 5W/20 = W/5 + W/4 = 9W/20

remaining work after A leaves is W - 9W/20 = 11W/20

11W/20 work is to be done B alone and B can do a work of W/20 in one day

⇒ B completes the remaining work in 11 days.


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