Pipe and Cistern Questions Practice Question and Answer

Q:

Pipes A and B together can fill a tank in 16 hours, whereas pipe C alone can empty the full tank in 24 hours. A and B were opened together for 10 hours and then closed. Pipe C was then opened. The tank will now be emptied by C in:

706 0

  • 1
    18 hours
    Correct
    Wrong
  • 2
    14 hours
    Correct
    Wrong
  • 3
    16 hours
    Correct
    Wrong
  • 4
    15 hours
    Correct
    Wrong
  • Show AnswerHide Answer
  • Workspace

Answer : 4. "15 hours"

Q:

A pipe can fill a tank in x hours and an another can empty it in y hours. In how many hours will they together fill it. If y>x?

686 0

  • 1
    $$ {xy\over y-x}{hrs}$$
    Correct
    Wrong
  • 2
    $$ {y-x\over xy}{hrs}$$
    Correct
    Wrong
  • 3
    $$ {2yx\over y-x}{\ hs}$$
    Correct
    Wrong
  • 4
    Can’t be determined
    Correct
    Wrong
  • Show AnswerHide Answer
  • Workspace

Answer : 1. "$$ {xy\over y-x}{hrs}$$"

Q:

A cistern has 3 pipes A, B and C. A and B can fill it in 3 and 4 hours respectively, and C can empty it in 1 hour. If the pipes are opened at 3 p.m., 4 p.m. and 5 p.m. respectively on the same day, the cistern will be empty at-

652 0

  • 1
    7.12 p.m.
    Correct
    Wrong
  • 2
    7.15 p.m.
    Correct
    Wrong
  • 3
    7.10 p.m.
    Correct
    Wrong
  • 4
    7.18 p.m.
    Correct
    Wrong
  • Show AnswerHide Answer
  • Workspace

Answer : 1. "7.12 p.m."

Q:

One filling pipe P is three times faster than another filling pipe Q, if P can fill tank in 24 hours, then what is the time taken to completely fill the tank if both the pipes are opened together?

623 0

  • 1
    12 hours
    Correct
    Wrong
  • 2
    18 hours
    Correct
    Wrong
  • 3
    16 hours
    Correct
    Wrong
  • 4
    14 hours
    Correct
    Wrong
  • 5
    None of these
    Correct
    Wrong
  • Show AnswerHide Answer
  • Workspace

Answer : 2. "18 hours"

Q:

Two pipe A and B can fill a tank in 16 hrs and 12 hrs respectively. The capacity of the tank is 240 litres. Both the pipes are opened simultaneously and closed after 2 hrs. How much more water (In Liters) needed to fill the tank?

586 0

  • 1
    100
    Correct
    Wrong
  • 2
    170
    Correct
    Wrong
  • 3
    70
    Correct
    Wrong
  • 4
    190
    Correct
    Wrong
  • 5
    None of these
    Correct
    Wrong
  • Show AnswerHide Answer
  • Workspace

Answer : 2. "170"

Q:

A tank can be filled by A in 60 minutes and emptied by B in 75 minutes. The tank is half filled and Ravi wants to fill the tank but opens B mistakenly and realizes after half hour and closed tap B. He then opens A and tank is completely filled in _______ minutes.

563 0

  • 1
    48
    Correct
    Wrong
  • 2
    54
    Correct
    Wrong
  • 3
    50
    Correct
    Wrong
  • 4
    64
    Correct
    Wrong
  • 5
    None of these
    Correct
    Wrong
  • Show AnswerHide Answer
  • Workspace

Answer : 2. "54"

Q:

A tank can be filled with water by two pipes A and B together in 36 minutes. If the pipe B was closed after 30 minutes, the tank is filled in 40 minutes. The pipe B can alone fill the tank in?

543 0

  • 1
    45 minutes
    Correct
    Wrong
  • 2
    60 minutes
    Correct
    Wrong
  • 3
    75 minutes
    Correct
    Wrong
  • 4
    90 minutes
    Correct
    Wrong
  • 5
    85 minutes
    Correct
    Wrong
  • Show AnswerHide Answer
  • Workspace

Answer : 4. "90 minutes"

Q:

Pipes A and B can fill a tank in 12 minutes and 15 minutes, respectively. The tank when full can be emptied by pipe C in x minutes. When all the three pipes are opened simultaneously, the tank is full in 10 minutes. The value of x is:

542 0

  • 1
    18
    Correct
    Wrong
  • 2
    15
    Correct
    Wrong
  • 3
    20
    Correct
    Wrong
  • 4
    24
    Correct
    Wrong
  • Show AnswerHide Answer
  • Workspace

Answer : 3. "20"

      Report Error

    Please Enter Message
    Error Reported Successfully

      Report Error

    Please Enter Message
    Error Reported Successfully

      Report Error

    Please Enter Message
    Error Reported Successfully

      Report Error

    Please Enter Message
    Error Reported Successfully

      Report Error

    Please Enter Message
    Error Reported Successfully

      Report Error

    Please Enter Message
    Error Reported Successfully

      Report Error

    Please Enter Message
    Error Reported Successfully

      Report Error

    Please Enter Message
    Error Reported Successfully