DELHI POLICE HEAD CONSTABLE PIPE AND CISTERN QUANT QUIZ-4

Pipe $A$ and $B$ running together can fill the cistern in 6hours. A takes 5 hours more than B to fill the cistern when opened separately. In how much time pipe B can fill the cistern alone?

Two inlet pipes, A and B, can fill an empty cistern in 22 and 33 hours, respectively. They were opened at the same time, but pipe A had to be closed 3 hours before the cistern was full. How many hours in total did it take the two pipes to fill the cistern ?

A water tank has two holes. The 1st hole alone empties the tank in 8 minutes and 2nd hole alone empties the tank in 12 minutes. If water leaks out at a constant rate, how many minutes will it take, if both the holes together empty the tank?

A, B and C are three pipes connected to a tank. A and B together fill the tank in 6hrs. B and C together fill the tank in 10 hrs. A and C together fill the tank in 7.5 hours. In how much time will A alone fill the tank?

Pipe A can fill a tank in 5 hours while Pipe B can fill the same tank in 20 hours and pipe C can empty the tank in 16 hours . If pipe B is opened for 3 hours and pipe C is opened for 5 hours then find in how many hours pipe take to fill tank .

Tap A can fill a cistern in 12 minutes. Tap B can fill the same cistern in 20 minutes. There is an outlet pipe that can empty 42 litre of water in a minute. If all pipes are opened together, tank become full in 30 minutes. Find volume of tank.

Two pipe $A$ and $B$ can fill a tank in 10 and 15 minutes respectively. If both the pipes are used together, then low long will it take to fill the tank?

A tank can be filled by pipe $A$ in 2 hours and pipe $\mathrm{B}$ in 6 hours. At 10 a.m pipe A was opened. At what time will the tank be filled if pipe B is opened at 11 a.m?

Two pipes can fill a cistern separately in 24 minutes and 40 minutes respectively. A waste pipe can drain off 30 litres per minute. If all the three pipes are opened, the cistern fills in one hour. The capacity (in litres) of the cistern is: