Ramesh and Rahman can do a work in 20 and 25 days respectively. After doing collectively 10 days of work, they leave th…

A can do a piece of work in 20 days and B in 40 days. If they work together for 5 days, then the fraction of the work th…

A tank can be filled with water by two pipes A and B together in 36 minutes. If the pipe B was stopped after 30 minutes,…

A group of workers can complete a piece of work in 50 days, when they are working individually. On the first day one per…

A contractor was engaged to construct a road in 16 days. After working for 12 days with 20 labours it was found that onl…

A can do in one day three times the work done by B in one day. They together finish $$\frac{2}{5}$$ of the work in 9 da…

A, B and C can complete a work in 10, 12 and 15 days respectively. They started the work together. But A left the work 5…

A and B together can do a piece of work in 8 days, B and C together in 10 days, while C and A together in 6 days, if the…