Practice Pipes and cisterns Questions and Answers

• Two pipes A and B can fill a tank in (x+4) hours and (x+8) hours, respectively. Both pipes are opened together, and after 4 hours, pipe A is closed. Pipe B...
• Pipe A can fill a tank in 50% less time than it takes pipe B to empty it, while pipe C can fill the same tank in 25% less time than pipe B's emptying durat...
• Pipe 'A' can fill a water tank in 6 hours, while pipe 'B' requires 8 hours to do the same. When a third pipe, 'C', also contributes, the tank is filled in ...
• Pipe P can fill half of the tank in 8 hrs 5 min and pipe Q can fill the same tank completely in 16 hrs 5 min. Another pipe R can empty the full tank in 12 ...
• Two inlet pipes, each with the same capacity, can fill an empty tank 'A' together in 20 minutes. There is also an outlet pipe that can empty 40% of the tan...
• An empty tank can be filled by an inlet pipe in 10 hours, while an outlet pipe can empty it in 15 hours. If we open (N - 1) outlet pipes of the same capaci...
• Two pipes A and B are opened together to fill a tank. Both the pipes fill the tank in time “x”. If A separately takes 8 minute more time than “x” t...
• A tank can be filled by two pipes, A and B, in 15 minutes and 20 minutes, respectively. Both pipes are opened together, but after 5 minutes, pipe A is clos...
• A large cistern can be filled by two pipes, P and Q, in 16 minutes and 24 minutes, respectively. Pipe R can empty the cistern in 32 minutes. How many minut...
• A tank has two inlet pipes and one outlet pipe. Pipe A can fill the tank in 4 hours, and Pipe B can fill it in 6 hours. The outlet pipe C can empty the tan...
• Two pipes, A and B, can fill a tank in 12 hours and 15 hours respectively, while a third pipe, C, can empty the tank in 10 hours. If all three pipes are op...
• A tank has three pipes, X, Y, and Z. X can fill the tank in 8 hours, Y can fill it in 12 hours, and Z can empty it in 6 hours. If X, Y, and Z are opened to...
• Pipes A and B can fill an empty tank in 20 hours and 24 hours, respectively, while pipe C can drain the full tank in "x" hours. If all three pipes (A, B, a...
• The efficiency of inlet pipe 'P' is 60% of the efficiency of another inlet pipe 'Q'. When both pipes are opened together, they fill a tank in 4 hours. How ...
• Tap A can fill tank X in 20 minutes, but with a leakage (tank Y), it takes 33(1/3) minutes to fill. Tap B operates at 20% less efficiency than Tap A. Deter...
• Pipe A can fill a tank in 10 hours, while Pipe B can fill it in 15 hours. Pipe C can empty the tank in 12 hours. If all three pipes are opened together, ho...
• A pipe fills a tank in 20 hours, and another pipe empties it in 30 hours. If both pipes are opened together, how long will it take to fill the tank?
• Two pipes, A and B, can fill a tank in 12 hours and 15 hours, respectively. Pipe A is open for 6 hours and then pipe B is also opened. After how much time ...
• Pipe 'A' can fill a tank in 24 hours, while Pipe 'B' takes 36 hours to fill the same tank. If Pipe 'B' is opened first and Pipe 'A' is turned on after a de...
• A tank is filled by three pipes A, B, and C. Pipe A can fill the tank in 12 hours, pipe B in 16 hours, and pipe C can empty the tank in 8 hours. If all thr...
• 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...
• A printing machine ‘P’ and a printing machine ‘Q’ can print a set of documents in 14 hours and 21 hours, respectively. If both machines work togeth...
• 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...