Practice Pipes and cisterns Questions and Answers

• A tank has two pipes, Pipe A and Pipe B. Pipe A fills the tank in 10 hours, while Pipe B fills it in 15 hours. Pipe C can empty the tank in 30 hours. If al...
• Pipes A, B, and C are connected to a tank. Pipe A can fill the empty tank in 48 minutes, and Pipe B can do the same in 80 minutes. On the other hand, Pipe ...
• Taps Q and R can fill a tank in 24 minutes and 32 minutes, respectively. The efficiency of tap S is 75% greater than that of tap Q. If tap R's efficiency i...
• Pipe Y is 25% less efficient than pipe X. Together, pipes X and Y can fill a tank in 15 minutes. Pipe Z alone can empty the tank in 70 minutes. How long wi...
• A tank is filled by two pipes A and B in 12 minutes and 15 minutes, respectively. Another pipe C can empty the tank in 10 minutes. If all three pipes are o...
• A pipe can fill a tank in 18 minutes, while another can empty it in 27 minutes. If both pipes are opened simultaneously, how long will it take to fill the ...
• The efficiencies of two inlet pipes, 'P' and 'Q', are in the ratio of 3:5, respectively. When both pipes are open together, the tank is filled in 16 hours....
• Pipe 'X' takes 50 minutes to fill the tank by itself, while Pipe 'Y' can fill it in 30 minutes on its own. What is the time required for both pipes to fill...
• Pipe X and Pipe Y can independently fill a tank in 18 minutes and 30 minutes, respectively. However, there is a leakage in the tank that causes water to fl...
• A tank has two inlet pipes, A and B, which can fill the tank in 6 hours and 8 hours, respectively, and an outlet pipe C, which can empty the tank in 12 hou...
• Pipes A and B can fill a tank in 12 minutes and 15 minutes, respectively, while outlet pipe C can empty the entire tank in 1 hour. All three pipes are open...
• A tank has two inlet pipes, A and B, and one outlet pipe, C. Pipe A can fill the tank in 6 hours, and pipe B can fill the tank in 8 hours. Pipe C can empty...
• Time taken by a tap to fill a tank is 8 hours. If the time taken by tap to fill the tank gets doubled due to a leakage in the tank, then find the time take...
• Two taps can fill a tank in 18 hours and 24 hours, respectively. A waste pipe can empty the tank in 36 hours. If all three pipes are opened together, how m...
• A translator ‘X’ and a translator ‘Y’ can translate a book in 12 hours and 18 hours, respectively. If both translators work together, then how much...
• Two pipes A and B can fill a tank in 12 hours and 15 hours, respectively. Another pipe C can empty the tank in 10 hours. If all three pipes are opened toge...
• Pipe A can fill a tank in 6 hours, and Pipe B can fill it in 8 hours. Pipe C can empty the tank in 10 hours. If all three pipes are opened simultaneously, ...
• A tank has two inlet pipes A and B and an outlet pipe C. Pipe A can fill the tank in 6 hours, and Pipe B can fill it in 8 hours. Pipe C can empty the full ...
• Three pipes A, B, and C can fill a tank in 15 hours, 20 hours, and 25 hours respectively. All three pipes are opened together, but after 4 hours, pipe C is...
• An inlet pipe can fill a tank in 18 minutes, while an outlet pipe can empty it in 27 minutes. Sujata starts the inlet pipe at 6 a.m., but the outlet pipe i...
• Pipe ‘X’ and pipe ‘Y’ together can fill an empty tank in 24 hours while pipe ‘Y’ and pipe ‘Z’ together take 15 hours to fill the same tank....
• Pipe ‘P’ and pipe ‘Q’ together can fill an empty tank in 18 hours while pipe ‘Q’ and pipe ‘R’ together take 12 hours to fill the same tank....
• Pipe ‘M’ and pipe ‘N’ together can fill an empty tank in 30 hours while pipe ‘N’ and pipe ‘O’ together take 20 hours to fill the same tank....
• Pipe ‘G’ and pipe ‘H’ together can fill an empty tank in 40 hours while pipe ‘H’ and pipe ‘I’ together take 25 hours to fill the same tank....
• Pipe ‘X’ alone can fill a tank in 20 hours. When pipe ‘X’ and ‘Y’ are opened together, they can fill 60% of the same tank in 6 hours. Find the ...
• Pipe ‘P’ alone can fill a tank in 12 hours. When pipe ‘P’ and ‘Q’ are opened together, they can fill 75% of the same tank in 9 hours. Find the ...
• Pipe ‘E’ alone can fill a tank in 15 hours. When pipe ‘E’ and ‘F’ are opened together, they can fill 90% of the same tank in 9 hours. Find the ...
• An inlet tap alone can fill a tank in 40 minutes. However, when both an inlet and an outlet tap are open together, the tank takes 66 (2/3) minutes (or 200/...
• A single tap takes 8 hours to fill the entire tank. Initially, only one tap is open, and it fills one-fourth of the tank. At that point, three additional i...
• A single tap takes 12 hours to fill the entire tank. Initially, only one tap is open, and it fills half of the tank. At that point, four additional identic...
• Pipe ‘X’ alone can fill a tank in 20 hours. When both pipes ‘X’ and ‘Y’ are opened together, they can fill 75% of the tank in 9 hours. How much...
• Pipes ‘X’ and ‘Y’ alone can fill a tank in 12 minutes and 18 minutes, respectively, while pipe ‘Z’ can empty the same tank in 36 minutes. If al...
• Pipes ‘M’ and ‘N’ alone can fill a tank in 14 minutes and 21 minutes, respectively, while pipe ‘O’ can empty the same tank in 42 minutes. If al...
• Pipes ‘D’ and ‘E’ alone can fill a tank in 16 minutes and 24 minutes, respectively, while pipe ‘F’ can empty the same tank in 48 minutes. If al...
• Two pipes X and Y can fill a cistern in 21 hours and 24 hours, respectively. The pipes are opened simultaneously, and it is found that due to a leakage in ...
• Pipes P and Q can fill a tank in 12 hours and 15 hours respectively, while a third pipe C can empty the tank in 24 hours. If all three pipes are opened sim...
• Pipe A can fill a tank in 10 hours, whereas pipe B can empty the same tank in 12 hours. If the two pipes are operated alternately for one hour each, starti...
• Two taps A and B can fill a cistern in 12 min and 16 min respectively. If both taps are opened together and at the end of 4 min, B tap is turned off, then ...
• A pipe can fill a tank in 36 minutes while another pipe can drain the full tank in 48 minutes. Calculate how much time both pipes working together will tak...
• Pipe ‘P’ alone can fill a tank in 12 minutes. If pipes ‘P’ and ‘Q’ are operated together, they fill the tank in 16 minutes. Find the time taken...