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:

489 0

  • 1
    18 hours
    Correct
    Wrong
  • 2
    14 hours
    Correct
    Wrong
  • 3
    16 hours
    Correct
    Wrong
  • 4
    15 hours
    Correct
    Wrong
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Answer : 4. "15 hours"

Q:

If 20 taps can fill a tank in 14 hours, then how many times will 35 taps fill that tank?

626 0

  • 1
    8 hour
    Correct
    Wrong
  • 2
    6 hour
    Correct
    Wrong
  • 3
    14 hour
    Correct
    Wrong
  • 4
    10 hour
    Correct
    Wrong
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Answer : 1. "8 hour"

Q:

If all three pipes are opened for 2 minutes to fill the tank each alternatively in the sequence of A then C and then B.  Calculate water filled by pipes A is what % of water filled by pipe C?

1050 0

  • 1
    72.5 %
    Correct
    Wrong
  • 2
    75 %
    Correct
    Wrong
  • 3
    77.5 %
    Correct
    Wrong
  • 4
    80 %
    Correct
    Wrong
  • 5
    82.5 %
    Correct
    Wrong
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Answer : 2. "75 %"

Q:

Two pipe can fill a cistern in 3 hours and 4 hours respectively and a waste pipe can empty it in 2 hours. If all  the three pipes are kept open, then the cistern will be filled in

635 0

  • 1
    5 hours
    Correct
    Wrong
  • 2
    8 hours
    Correct
    Wrong
  • 3
    10 hours
    Correct
    Wrong
  • 4
    12 hours
    Correct
    Wrong
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Answer : 4. "12 hours"

Q:

Three pipes A, B and C can fill a cistern in 6 hours. After working at it together for 2 hours, C is closed and A and B can fill the remaining part in 7 hours. The time taken by C alone to fill the cistern is_

733 0

  • 1
    10 hours
    Correct
    Wrong
  • 2
    12 hours
    Correct
    Wrong
  • 3
    14 hours
    Correct
    Wrong
  • 4
    16 hours
    Correct
    Wrong
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Answer : 3. "14 hours"

Q:

A cistern can be filled by two pipes A and B in 4 hours and 6 hours respectively. When full, the tank can be emptied by a third pipe C in 8 hours. If all the taps be turned on at the same time, the cistern will be full in 

890 0

  • 1
    $$ {2}{2\over 7}{\ hours}$$
    Correct
    Wrong
  • 2
    $$ {3}{3\over 7}{\ hours}$$
    Correct
    Wrong
  • 3
    $$ {4}{3\over 7}{\ hours}$$
    Correct
    Wrong
  • 4
    $$ {2}{5\over 7}{\ hours}$$
    Correct
    Wrong
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Answer : 2. "$$ {3}{3\over 7}{\ hours}$$"

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Answer : 2. "96"

Q:

A tap drips at a rate of one drop/sec. 600 drops make 100ml. The number of litres wasted in 300 days is: 

1883 0

  • 1
    43200 litres
    Correct
    Wrong
  • 2
    4320 litres
    Correct
    Wrong
  • 3
    4320000 litres
    Correct
    Wrong
  • 4
    432000 litres
    Correct
    Wrong
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Answer : 2. "4320 litres"

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