Pipe M can fill the tank in 20 minutes, while Pipe N can empty the tank in 3/4 of the time taken by Pipe M. Find the time taken by Pipe N to empty the tank alone.

P can fill a tank in 5 hours. Q can fill the same tank in 10 hours. R. can empty the same tank in 20 hours. How much time will all the three take together to fill the same tank?

Three pipes A, B and C can fill a tank in 270 hours. After working together for 90 hours C is turned off and then A and B fill the remaining part in 270 hours. Find the number of hours taken by C to fill the tank.

Pipes A and B can fill a tank in 12 hours and 16 hours respectively and pipe C can empty the full tank in 24 hours. All three pipes are opened toghether, but after 4 hours pipe B is closed. In how many hours, the empty tank will be completely filled?

Pipes P and Q can fill the tank in 18 and 27 minutes, respectively, while pipe R can empty the full tank in 54 minutes. After P and Q are opened together for 6 minutes, they are closed, and R is opened. Find the time taken by R alone to empty the tank.

A cistern filled in 30 hours by three pipes A, B and C. The pipe C is thrice as fast as B and B is twice as fast as A. How much time will pipe A alone take to fill the tank?

Three pipes P, Q and R, together take four hours to fill a tank. All the three pipes were opened at the same time. After three hours, P was closed, and Q and R filled the remaining tank in two hours. How many hours will P alone take to fill the tank?

Two pipes can fill a tank in 15 hours and 4 hours respectively, while a third pipe can empty it in 12 hours, How long (in hours) will it take to fill the empty tank if all three pipes are opened simultaneously?

There pipes A,  B and C, can fill a tank in 10, 15, and 18 hours, respectively. A and C are opened for 5 hours, then only pipe A is closed and B is opened at the same time (with C). The total time taken to fill the tank completely is:

One pipe can fill a tank 6 times faster than another pipe. If both the pipes together can fill the tank in 40 minutes, then in how many minutes will the slower pipe alone be able to fill the tank?

A pipe can fill a tank in 30 hours. Due to a leakage at the bottom, it is filled in 50 hours. How much time will the leakage take to empty the filled tank?

Pipes A and B together can fill a tank in 10 hours. Pipes B and C together can fill the same tank in 12 hours. Pipes A and C together can fill the same tank in 15 hours. In how many hours can pipe B alone fill the same tank?

Pipe A can empty a filled tank in 28 hours while Pipe B can fill the same tank, when empty, in 35 hours. If alternately pipes A and B are turned on for an hour each time, starting when the tank is full, how long will it take to empty the tank?

Each inlet pipe can fill an empty cistern in 84 hours while each drain pipe can empty the same cistern from a filled condition in 105 hours. When the cistern is empty, 9 inlet pipes and 10 outlet pipes are simultaneously opened. After how many hours will the cistern be completely filled?

Pipe A can fill a tank in 110 hours, Pipe B can fill the same tank in 132 hours and Pipe C can fill the same tank in 165 hours. If all three pipes are open together for first 22 hours and then pipe B is closed,. In how many hours will the remaining part of the tank be filled by Pipe A and Pipe C?

A cistern has a leak which would empty it in 6 hours. A tap is turned on which admits 10 litres of water per minute into the cistern. When it is full it now emptied in 10 hours. What is the capacity (in litres) of the cistern?

Two pipes A and B can fill a tank in 48 minutes and 66 minutes, respectively. If both the pipes are opened simultaneously, then after how many minutes should pipe B be closed so that the tank gets filled in 32 minutes?

Three pipes A, B, and C can fill a cistern in 138 hours. After working together for 46 hours, C is closed, and A and B can fill the remaining part in 138 hours. Find the number of hours taken by C alone to fill the cistern.

Two pipes S₁ and S₂ alone can fill an empty tank in 15 hours and 20 hours respectively. Pipe S₃ alone can empty that completely filled tank in 40 hours. Firstly both pipes S₁ and S₂ are opened and after 2 hour pipe S₃ is also opened. In how much time tank will be completely filled after S₃ is opened?

Three pipes A, B and C together can fill a tank in 8 hours. These pipes were opened for 2 hours, after that C was closed. Later A and B fill the remaining part in 9 hours. How many hours would pipe C alone take to fill the tank?

There pipes A,  B and C, can fill a tank in 10, 15, and 18 hours, respectively. A and C are opened for 5 hours, then only pipe A is closed and B is opened at the same time (with C). The total time taken to fill the tank completely is:

Pipe A and B can fill the tank in 15 hours and 12 hours respectively. Pipe C can empty the full tank in 20 hours. If all the taps open simultaneously at 10 am, how much time will it take to fill the empty tank once, and what time will it be on clock?

Two Pipes A and B can fill a cistern in 10 hours and 12 hours. A third pipe C empties the tank 75 liters per hour then the tank is filled in 8(4/7) hours. Find the capacity of the cistern.

Two Pipes A and B can fill a cistern in 10 hours and 12 hours. A third pipe C empties the tank 75 liters per hour then the tank is filled in 8(4/7) hours. Find the capacity of the cistern.

Three pipes P, Q and R can separately fill a cistern in 12, 15, 20 minutes respectively. How much part of the cistern will be filled in 4 minutes if all three pipes are opened simultaneously?

Three pipes A, B & C take 12.5 hr, 37.5 hr, and 50 hr respectively to fill a tank. In how much time will they together take to fill the tank?

Three pipes A, B, & C can fill a tank in 18 hours, 25 hours & 45 hours respectively. Find the time taken by them if they fill the tank together.

There are three pipes A, B, and C fitted with a cistern, which can fill it in 45 min, 60 min, and 90 min respectively. If all three pipes are kept open together then, find the time taken by them to fill the cistern.

A cistern filled in 30 hours by three pipes A, B and C. The pipe C is thrice as fast as B and B is twice as fast as A. How much time will pipe A alone take to fill the tank?

Two inlet pipes can fill an empty tank in 21 and 24 hours and one outlet pipe can empty the tank in 42 hours. If all the pipes opened simultaneously then, how many hours are required to fill the full tank?

Pipe M can fill the tank in 20 minutes, while Pipe N can empty the tank in 3/4 of the time taken by Pipe M. Find the time taken by Pipe N to empty the tank alone.

A hole in a tank can empty the tank in 5 hours so the owner upgraded the pipe, now the new pipe can fill the tank in 3 hours only. How many hours extra would it take to fill the tank compared to when the tank has no hole?

Tap A takes 12 minutes more than Tap B to fill a tank. If they both are opened together it takes 14 minutes to 24 seconds to fill the tank, then what is the time taken (in minutes) by Tap A to fill the tank?

There are nine pipes connected to a tank, some of them are inlets while others are outlet pipes. A single inlet pipe can fill the tank in 20 hours, while a single outlet pipe empty it in 30 hours. If all the pipes are opened simultaneously, the tank gets filled in 30 hours. Find the number of inlet pipes.

Pipe M can fill the tank in 20 minutes, while Pipe N can empty the tank in 3/4 of the time taken by Pipe M. Find the time taken by Pipe N to empty the tank alone.

There are 3 taps attached with a cistern. A and B can empty the full cistern in 72 hours and 90 hours and tap C can full the empty cistern in 42 hours. A and B work together on the first hour and C work on the next hour and they work in the following hours further, in this way. Find the total time required to empty the cistern.(approx)

Tap A can fill the tank alone in 44 minutes whereas Tap B can completely drain a whole tank alone in 55 minutes. If both are open simultaneously, what will be the time taken for the tank to fill?

Pipes A and B can fill a tank in 20 minutes and 60 minutes respectively. Pipe C can empty the tank in 75 minutes. Now pipes A and B are opened together for 5 minutes and closed. For how much time (in minutes) should C be opened so that the tank is emptied again?

Pipe A can fill 3/5 of a tank in 9 minutes and pipe B can empty 3/4 of a tank in 6 minutes. If the tank has filled and both pipes are open then calculate the total time when the tank will empty.

A tank consists of one inlet, one outlet pipe, and a hole. The Inlet pipe fills the tank in 5 hours, the outlet pipe empties the tank in 15 hours and the hole can empty the tank in 30 hours. Find the time taken to fill the tank when all of them are open together.

A water tank is three-fifths full. Pipe A can fill a tank in 15 minutes, and pipe B can empty it in 8 minutes. If both the pipes are open, how much time will it take to empty or fill the tank completely?

Ayush can fill a tank in 15 minutes while his friend Shraddha can fill the same tank in 4 minutes. If they worked with Arya who can fill 1/60th tank per minute, then find the time taken by all three to fill the tank.

Tap A can fill a tank in 20 hours, tap B can fill it in 15 hours and tap C can empty the full tank in 60 hours. If all three pipes are opened together, in how many hours, will the tank be half-filled?

Pipe A can fill 3/5 of a tank in 9 minutes and pipe B can empty 3/4 of a tank in 6 minutes. If the tank has filled and both pipes are open then calculate the total time when the tank will empty.

A hole in a tank can empty the tank in 5 hours so the owner upgraded the pipe, now the new pipe can fill the tank in 3 hours only. How many hours extra would it take to fill the tank compared to when the tank has no hole?

Two Pipes A and B can fill a cistern in 10 hours and 12 hours. A third pipe C empties the tank 75 liters per hour then the tank is filled in 8(4/7) hours. Find the capacity of the cistern.

Pipes P and Q can fill a water tank in 10 hours and 15 hours, respectively. A pipe R can empty a tank filled with water in 12 hours. Initially, the tank is empty and only pipes P and Q are opened at 6 a.m. and pipe R is also opened at 9 a.m. By what time will the tank be filled?

Two pipes A and B can fill the cistern in 7 hours and 15 hours. If Pipe B works for 5 hours, then find the time taken by A to fill the remaining cistern.

Pipe A can empty a filled tank in 28 hours while Pipe B can fill the same tank, when empty, in 35 hours. If alternately pipes A and B are turned on for an hour each time, starting when the tank is full, how long will it take to empty the tank?

A water tank is three-fifths full. Pipe A can fill a tank in 15 minutes, and pipe B can empty it in 8 minutes. If both the pipes are open, how much time will it take to empty or fill the tank completely?