An engine pumps out 950 litres of water in a minute.How much time will it take to pump out 13,96,500 litres of water?

A boy and girl together fill a cistern with water. The boy pours 4 litres of water every 3 minutes and the girl pours 3 litres every 4 minutes. How much time will it takes to fill 100 litres of water in the cistern?

An engine pumps out 84500 litres of water in an hour. The engine is run for 10 hours a day. I How many litres of water will it pump out in 5 days?

The engine of a water pump develops a power of 5 kW. How much time it will takes to lit 500 litre of water from the bottom of the building to the terrace at a height of 20 m? [g=10m//s^(2)]

8pumps to to fill a tank in 1hour 30minutes. How long will it take,if only 6pumps?

It takes 12 minutes to boil 1 litre of water in an electric kettle. Due to some defect it becomes necessary to remove 20% turns of heating coil of the kettle. After repair, how much time will it take to boil 1 litre of water?

A cylindrical drum, open at the top, contains 30 litres of water. It drains out through a small opening at the bottom. 10 litres of water comes out in time t_1 , the next 10 litres in a further time t_1 and the last 10 litres in a further time t_3 Then,

A cylindrical drum, open at the top, contains 30 litres of water. It drains out through a small opening at the bottom. 10 litres of water comes out in time t_1 , the next 10 litres in a further time t_2 and the last 10 litres in a further time t_3 Then,