A and B together can do a piece of work in 12 days, B alone can finish it in 30 days.In how many days can A alone finish the work?

The speed of a boat in still water is 2 km/hr. If its speed upstream be 1 km/hr, then the speed of the stream is

A can do a piece of work in 12 days and B alone can do it in 15 days. How much time both will take to finish the work ?

A and B can together do a piece of work in 15 days. B alone can do it in 20 days. A alone can do it in

2 men and 3 women can finish a piece of work in 10 days, while 4 men can do it in 10 days.3 men and 3 women will finish it in

If 5 men or 9 women can do a piece of work in 19 days: 3 men and 6 women will do the same work in:

A can do a piece of work in 25 days and B can finish it in 20 days. They work together for 5 days and then A goes away. In how many days will B finish the work?

If 25 men can weave 120 metres of cloth in a day,how many metres of cloth can be woven by 35 men in a day?

A train 120 m long, crosses a pole in 10 seconds. The speed of the train is

18 km per hour ₌  ________ m/sec