A and B can do a piece of work in 45 and 40 days respectively. They began the work together but A left after some days and B finished the remaining work in 23 days. A left after

A and B can complete a work in 15 days and 10 days respectively. They started doing the work together but after 2 days B had to leave and A alone completed the remaining work. The whole work was completed in :8 days10 days12 days15 days

A and B together can complete a piece of work in 35 days, while A alone can complete it in 60 days. So, B alone can complete the work in how many days?

A can do a half of certain work in 35 days and B one third of the same in 70 days. They together will do the whole work in.

A can do a piece of work in 80 days. He works on it for 10 days and then B alone finishes the remaining work in 42 days. In how much time will A and B working together, finish the work?A 40 days B 30 days C 60 days D 50 days

A can do a work in 15 days and B in 20 days. If they work on it together for 4 days, then the fraction of the work that is left is :