A can do a piece of work in 7 days of 9 hours each and B can do it in 6 days of 7 hours each.
Channel: Doubtnut
Date: 2020-04-05

A can do a piece of work in 7 days of 9 hours each and B can do it in 6 days of 7 hours each. How long will they take to do it, working a together `8 2/5`a day?