Arithmetic Questions And Answers :: Time And Work: part1

16.Sunil completes a work in 4 days whereas Dinesh completes the work in 6 days. Ramesh works 1 times as fast as Sunil. How many days it will take for the three together to complete the work?

17.A and B can do a piece of work in 6 days and A alone can do it in 9 days. The time taken by B alone to do the work is :

18.Twelve men can complete a work in 8 days. Three days after they stated the work, 3 more men joined them. In how many days will all of them together complete the remaining work?

19.A can do a piece of work in 20 days which B can do in 12 days. B worked at it for 9 days. A can finish the remaining work in: