Question

A can do a piece of work in 10 days and B can do it in

12 days. They work together for 3 days. Then B leaves and A alone continues. 2 days after that C joins and the work is completed in 2 days more. In how many days can C do it, if he works alone ?

A 30 days

B 50 days

C 40 days

D 60 days

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Question

A can do a piece of work in 10 days and B can do it in

Solution

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