A and B can do a piece of work together in 15 days. they both start together but after 6 days B falls ill and A takes 30 more days to finish the work by himself . how long will each take working alone?
A and B can do a piece of work together in 15 days. they both start together but after 6 days B falls ill and A takes 30 more days to finish the work by himself . how long will each take working alone?