UP POLICE CONSTABLE QUANT (PIPE AND CISTERN) QUIZ 2

Two pipes A and B can fill a tank in 12 h and 16 h respectively. Starting from the first pipe A, they are opened alternately for 1 h. In how many hours will 75% of the tank be filled?

Pipe A can fill a tank in 30 minutes while pipe B can fill the same tank in 15 minutes and pipe C can empty the tank in 20 minutes. If Pipe A is opened for 5 minutes while pipe C is closed before 10 minutes to fill the tank by Band C. Find in how many minutes tank will completely fill.

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?

There are two inlet pipes $\mathrm{A}$ and $\mathrm{B}$ can fill a tank in 20 minutes and 30 minutes respectively. Outlet pipe C can empty the whole tank in 15 minutes. What time will they take (in minutes) to fill the whole tank, if they start together?

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.

Pipe A can fill a cistern in 3 hrs. If a leakage devolops in the tank, it takes 20 mins more to fill the tank. In how much time the leakage alone will empty the full tank?

A cistern has 3 pipes $A, B$ and $C . A$ and $B$ can fill it in $3 \mathrm{hr}$ and $4 \mathrm{hr}$ respectively and $\mathrm{C}$ can empty it in 1 hour. If the pipes are opened at 3 pm, 4 pm and 5 pm respectively on the same day, the cistern will be empty at

A water tank has two holes. The 1st hole alone empties the tank in 9 minutes and 2nd hole alone empties the tank in 6 minutes. If water leaks out at a constant rate, how many minutes does it take if both the holes together empty the 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?

It takes 12.5 minutes to completely fill a vessel with juice. However, kids are continuously drinking juice from the vessel at a rate which can empty the vessel in 25 minutes. At the current rate, how long will it take to completely fill the vessel?