Banking Quantitative Aptitude Pipes & Cisterns Question Bank

done Pipe and Cistern Total Questions - 20

• question_answer1)
  Pipe A can fill a tank in 3 hrs while another pipe B can empty the same tank in 6 hrs. If both the pipes are opened simultaneously. In what time will the tank be completely full?
  A)
  4 hrs     done clear
  B)
  3 hrs done clear
  C)
  2 hrs done clear
  D)
  1.5 hrs done clear
  E)
  6 hrs done clear
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• question_answer2)
  A vessel can be completely filled by a pipe in 16 hrs but due to a leak in the vessel, the vessel is now filled in 24 hrs. If the vessel is completely full, in what time the leak will empty the vessel completely.
  A)
  48 hrs done clear
  B)
  36 hrs done clear
  C)
  44 hrs done clear
  D)
  42 hrs done clear
  E)
  None of these done clear
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• question_answer3)
  Two pipes A and B can separately fill in a cistern 15 and 10 minutes respectively and a waste pipe can discharge 7 litres per minute. If all the pipes are opened when the cistern is full, it in emptied in 2 min. How many litres does the cistern hold?                                  
  A)
   21 ltr done clear
  B)
  30 ltr done clear
  C)
  40 ltr done clear
  D)
  35 Itr done clear
  E)
  45 Itr done clear
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• question_answer4)
  Two fill taps A and B can separately fill a tank in 45 and 40 min respectively. They started to fill tank together but fill tap A is turned off after few minutes and fill tap B fill the rest part in 23 minutes. After how many minutes was tap A turned off?
  A)
  7 min done clear
  B)
  8 min done clear
  C)
  11 min done clear
  D)
  15 min done clear
  E)
  9 min done clear
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• question_answer5)
  Two pipes A and B can fill a tank in 15 hours and 20 hours respectively A third pipe C can empty the full tank in 25 hours. All the three pipes are opened in the beginning. After 10 hours, C is closed. Find in how much time will the tank be full.                                                                                                 
  A)
  12 hrs done clear
  B)
  8 hrs done clear
  C)
  10 hrs done clear
  D)
  14 hrs done clear
  E)
  16 hrs done clear
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• question_answer6)
  Two taps A and B can fill a cistern in 15 min and 20 min respectively. Then both are turned on at the same time. If the tap A is turned off after some time, after that cistern is filled in 12 min. After how much time tap A is closed?
  A)
  \[4\frac{3}{5}\min \] done clear
  B)
  \[3\frac{3}{7}\min \] done clear
  C)
  \[5\frac{2}{5}\min \] done clear
  D)
  \[8\frac{1}{9}\min \] done clear
  E)
  \[7\frac{3}{4}\min \] done clear
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• question_answer7)
  A, B and C can fill a tank in 6, 8, 12 hours respectively. If the pipes are opened in order at 10 am, 11 am, 12 am. When will the cistern be filled? (approximately)
  A)
  1 P.M. done clear
  B)
  1.30 P.M. done clear
  C)
  1.50 P.M. done clear
  D)
  2.00 P.M. done clear
  E)
  2.20 P.M. done clear
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• question_answer8)
  The inlet to the tank can fill it in.4 hours while the outlet can empty it in 5 hr. Both the pipes were opened at 9 am but after some time the outlet closed and it is observed that the tank was full at 5 pm. At what time was the outlet closed?
  A)
  12 P.M. done clear
  B)
  2 P.M. done clear
  C)
  3 P.M. done clear
  D)
  8 P.M. done clear
  E)
  6 P.M. done clear
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• question_answer9)
  Two pipes A and B can fill a tank in 30 min and 36 min respectively. Both pipes are open in the empty tank but due to dust material present in the pipes A flows \[\frac{5}{6}\] of original quantity and pipe B flows \[\frac{9}{10}\] parts of original quantity. After some time pipe is cleaned, then tank is filled in the \[\frac{31}{2}\] min so after how much time pipes are ready to fill the tank properly?                                                            
  A)
  1 min done clear
  B)
  2 min done clear
  C)
  1.5 min done clear
  D)
  5 min done clear
  E)
  5.5 min done clear
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• question_answer10)
  A tank is filled by three pipes with uniform flow. The first two pipes operating simultaneously fill the tank in the same time during which the tank is filled by the third pipe alone the second pipe fills the tank 5 hours faster than the first pipe and 4 hours slower than the third pipe. The time required by the first pipe is:
  A)
  11 h done clear
  B)
  15h done clear
  C)
  4 h done clear
  D)
  12 h done clear
  E)
  18 h done clear
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• question_answer11)
  A tank is filled in 5 hours by three pipes P,Q & R. The pipe R is twice as fast as Q and Q is twice as fast as P. How much time will pipe P alone take to fill the tank?
  A)
  35 hr done clear
  B)
  55 hr done clear
  C)
  20 hr done clear
  D)
  18 hr done clear
  E)
  15 hr done clear
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• question_answer12)
  Three pipes P, Q and R can fill a tank in 6 hours. After working at it together for 2 hrs R is closed & P and Q can fill the remaining part in 7 hours. The number of hours taken by R alone to fill the tank is-
  A)
  10 hr done clear
  B)
  12 hr done clear
  C)
  13 hr done clear
  D)
  14 hr done clear
  E)
  16 hr done clear
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• question_answer13)
  7 pipes attached with a tank out of which some are inlets and outlets. Every inlet can fill tank in 10 hours and every outlet can empty tank in 15 hours when all the pipes are opened simultaneously the tank filled up \[\frac{30}{11}\] hours. Find the no. of inlets & outlets-
  A)
  5, 2 done clear
  B)
  2, 5 done clear
  C)
  3, 4 done clear
  D)
  4, 3 done clear
  E)
  None of these done clear
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• question_answer14)
  Two pipes A and B can fill a tank in 20 minutes and 40 minutes. If both pipes are opened simultaneously, after how much time should B be closed so that the tank is full in 18 minutes?
  A)
  10 min done clear
  B)
  9 min done clear
  C)
  8 min done clear
  D)
  7 min done clear
  E)
  4 min done clear
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• question_answer15)
  Three pipes P, Q and R connected to a cistern. The first pipe (i.e) P can fill 1/2 part of the tank in one hour, second pipe, Q can fill 1/3 part of the cistern in one hour. R is connected to empty the cistern. After opening all the three pipes in a cistern which is 7/12 part filled. Then how much time required to empty the cistern completely?
  A)
  2 hours done clear
  B)
  3 hours done clear
  C)
  4 hours done clear
  D)
  5 hours done clear
  E)
  None of the Above done clear
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• question_answer16)
  In a tank there is a pipe which can be used for filling the tank as well as for emptying it. The capacity of the tank is 1200 \[{{m}^{3}}\]. The emptying of the tank is 10 \[{{m}^{3}}\]per minute higher than its filling capacity and the pump needs 6 minutes lesser to empty the tank than it needs to fill it. What is the filling rate of the pipe?
  A)
  \[20{{m}^{3}}/min.\] done clear
  B)
  \[40 {{m}^{3}} / min.\] done clear
  C)
  \[50 {{m}^{3}} / min.\] done clear
  D)
  \[60{{m}^{3}}/min.\] done clear
  E)
  None of the Above done clear
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• question_answer17)
  In what time would a cistern be filled by three pipes whose diameters are 1cm, 2 cm and 3 cm running together, when the largest pipe alone can fill the tank in 21 minutes. The amount of water flowing through the pipe is directly proportional to the square of its diameter?
  A)
  10.5 minutes done clear
  B)
  11.5 minutes done clear
  C)
  12.5 minutes done clear
  D)
  13.5 minutes done clear
  E)
  None of these done clear
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• question_answer18)
  A pipe can empty a tank in 60 minutes alone. Another pipe whose diameter is twice the diameter of first pipe is also opened. Now find the time in which both pipe will empty the tank together.
  A)
  8 min done clear
  B)
  10 min done clear
  C)
  12 min done clear
  D)
  14 min done clear
  E)
  None of These done clear
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• question_answer19)
    A fill pipe can fill the tank in 15 minutes and a drain pipe can drain the tank in 30 minutes. If a system of ‘x’ pipes (includes both fill and drain pipes) fills the tank in 3 minutes. Find the possible value of ‘x’.
  A)
  10 done clear
  B)
  16 done clear
  C)
  12 done clear
  D)
  14 done clear
  E)
  None of these done clear
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• question_answer20)
  An inlet pipe can fill a tank in 8 hours. An outlet pipe can empty the same tank in 12 hours. Initially the tank is completely empty. At this point of time, the inlet pipe is connected to the tank. After 3 hours, the outlet pipe is also connected to the tank. After how much time from the beginning, will the tank be full?
  A)
  15 hours done clear
  B)
  18 hours done clear
  C)
  20 hours done clear
  D)
  24 houre done clear
  E)
  22 hours  done clear
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