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Practice Pipes And Cisterns multiple-choice questions from General Aptitude. Choose an answer and review the result and available explanations.
Pipe P can fill a tank in 16 hours and pipe Q can fill it in 24 hours. Both pipes are opened together for 4 hours, then pipe P is closed. How much more time will pipe Q alone take to fill the remaining tank?
A cistern can be filled by two pipes in 15 and 20 minutes respectively. Both pipes are opened together but after 5 minutes, the slower pipe is turned off. How much more time will be needed to fill the cistern?
Three pipes A, B, and C are connected to a tank. A and B are inlet pipes that can fill the tank in 12 and 16 hours respectively, while C is an outlet pipe that can empty the tank in 8 hours. If all pipes are opened simultaneously, what will be the net effect?
A water tank has 5 outlet pipes that can empty the tank in 4, 6, 8, 12, and 24 hours respectively. If all pipes are opened together, how long will it take to empty the full tank?
Two pipes can fill a tank in 30 and 40 minutes respectively. There is also an outlet pipe that can empty the tank in 24 minutes. If all three pipes are opened together, how long will it take to fill the empty tank?
A pipe fills a tank in 6 hours. After 3 hours of filling, another pipe that can fill the tank in 4 hours is also opened. How much total time will it take to fill the tank completely?
A tank has two inlet pipes X and Y, and one outlet pipe Z. X can fill the tank in 10 hours, Y in 15 hours, and Z can empty it in 12 hours. If only X and Z are opened together, what happens?
Three pipes A, B, and C together can fill a tank in 4 hours. Pipe A alone takes 8 hours and pipe B alone takes 12 hours to fill the tank. How long will pipe C alone take to fill the tank?
A cistern has an inlet pipe that fills it in 8 hours and an outlet pipe that empties it in 10 hours. If the cistern is initially empty and both pipes are opened, how long will it take to fill 3/4 of the cistern?
Two pipes P and Q can fill a tank in 20 and 30 hours respectively. If pipe P is opened for 5 hours first, then both pipes are opened together, what is the total time to fill the tank?