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Three pipes A, B and C can fill a cistern in 7 hours. After working at it together for 2 hours, C is closed. Now A and B require 10 hours more to fill it. Then C alone will empty it in

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Important Questions on Pipes and Cistern

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Quantitative Aptitude for Competitive Examinations>Chapter 17 - Pipes and Cistern>Practice Problems Level 2>Q 1
Two pipes X and Y can fill a cistern in 24 minutes and 32 minutes, respectively. If both the pipes are opened together, then after how much time (in minutes) should Y be closed so that the tank is full in 18 minutes?
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Quantitative Aptitude for Competitive Examinations>Chapter 17 - Pipes and Cistern>Practice Problems Level 2>Q 2
Having the same capacity, 10 taps fill up a water tank in 24 minutes. How many taps of half the capacity are required to fill up the same water tank in 15 minutes?
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Quantitative Aptitude for Competitive Examinations>Chapter 17 - Pipes and Cistern>Practice Problems Level 2>Q 3
Three pipes P, Q and R can separately fill a cistern in 4, 8 and 12 hours, respectively. Another pipe Scan empty the completely filled cistern in 10 hours. Which of the following arrangements will fill the empty cistern in less time than others?
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Quantitative Aptitude for Competitive Examinations>Chapter 17 - Pipes and Cistern>Practice Problems Level 2>Q 4
A cistern can be filled by two pipes A and B in 712 hours. Both of them are open for 212 hours and then B is closed. A alone now requires 623 hours more to fill cistern. How long would A take to fill the cistern working alone?
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Quantitative Aptitude for Competitive Examinations>Chapter 17 - Pipes and Cistern>Practice Problems Level 2>Q 5
Three pipes A, B and C can fill a tank in 20 min, 10 min and 30 min, respectively. When the tank is empty, all the three pipes are opened. A, B and C discharge chemical solutions p, q and r, respectively. The proportion of solution 'r' in the liquid in the tank after 5 minutes is
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Quantitative Aptitude for Competitive Examinations>Chapter 17 - Pipes and Cistern>Practice Problems Level 2>Q 7
A cistern when full is emptied by a waste pipe in 30 minutes, but if a tap (filling source) is opened, it takes 40 minutes to empty the cistern. How long the cistern will take to become full when both the pipes are working?
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Quantitative Aptitude for Competitive Examinations>Chapter 17 - Pipes and Cistern>Practice Problems Level 2>Q 8
Two pipes A and B can fill a water tank in 20 and 24 minutes, respectively, and a third pipe C can empty at the rate of 3 gallons per minute. If A, B and C are opened together, it fill the tank in 15 minutes. The capacity (in gallons) of the tank is
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Quantitative Aptitude for Competitive Examinations>Chapter 17 - Pipes and Cistern>Practice Problems Level 2>Q 9
Two taps can fill a tank in 20 minutes and 30 minutes, respectively. There is an outlet tap at exactly half level of that rectangular tank which can pump out 100 L of water per minute. If the outlet tap is open, then it takes 24 minutes to fill an empty tank. What is the volume of the tank?