Question

6. A and B can do a piece of work in 12 days; B and C in 15 days; C and A in 20 days. How much time

will A alone take to finish the work?


7. A pipe can fill a cistern in 10 hours. Due to a leak in the bottom it is filled in 12 hours. When the

cistern is full, in how much time will it be emptied by the leak?

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Answer 1

Answer:

A, B, and C together take 10 days to complete a piece of work. Hence, A, B, and C together take 10 days to complete a piece of work