Home
Class 14
MATHS
A cistern has two taps which fill it in ...

A cistern has two taps which fill it in 12 minutes and 15 mintues respectively . There is also a waste pipe in the cistern. When all the pipes are opened , the empty cistern is filled in 20 mintues. How long will the waste pipe take to empty a full cistern ?

A

8 minutes

B

10 minutes

C

12 minutes

D

16 minutes

Text Solution

Verified by Experts

The correct Answer is:
B
Promotional Banner

Topper's Solved these Questions

  • PIPE & CISTERN

    MAHENDRA|Exercise EXERCISE |25 Videos

  • PERMUTATION & COMBINATION

    MAHENDRA|Exercise Exercise |35 Videos

  • PROBABILITY

    MAHENDRA|Exercise EXERCISE|30 Videos

Similar Questions

Explore conceptually related problems

A cistern has two taps which fill it in 12 minutes and 15 minutes respectively. There is also a waste pipe in the cistern. When all the three are opened, the empty cistern is full in 20 minutes. How long will the waste pipe take to empty the full cistern ?

A cistern has two taps which fill it in 12 minutes and 15 minutes respectively.There is also a waste pipe in the cistern.When all the three are opened,the empty cistern is full in 20 minutes.How long will the waste pipe take to empty the full cistern?

Two pipes A and B can fill a cistern in 24 minutes and 30 minutes, respectively. There is also an outlet C. If all the three pipes are opened together, the cistern is filled in 20 minutes. How much time will be taken by C to empty the full cistern?

Two pipe A and B can separately fill a cistern in 60 minutes and 75 minutes respectively . There is a third pipe at the bottom of the cistern to empty it, if all the three pipes are simultaneously opened, then the cistern is filled in 50 minutes . In how much time can the third pipe alone empty the cistern ?

Two pipes 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 :

Two pipes A and B can separately fill a cistern in 60 minutes and 75 minutes respectively. There is a third pipe in the bottom of the cistern to empty it. If all the three pipes are simultaneously opened then the cistern is full in 50 minutes. In how much time, the third pipe alone can empty the cistern? 90 m in b. 100 m in c. 110 m in d. 120 m in

MAHENDRA-PIPE & CISTERN-EXERCISE
  1. Two pipes A and B can fill a cistern in 24 minutes and 30 minutes, res...

    Text Solution

    |

  2. A cistern has a leak which would empty in 8 hours. A tap is turned on ...

    Text Solution

    |

  3. If two pipes function simultaneously, a tank is filled in 12 hours. On...

    Text Solution

    |

  4. One fill pipe A is 3 times faster than second fill pipe B and takes 32...

    Text Solution

    |

  5. Two pipes A and B can fill a cistern in 4 minutes and 6 minutes respec...

    Text Solution

    |

  6. There are two taps to fill a tank while a third to empty it. When the ...

    Text Solution

    |

  7. A cistern is provided by two taps A and B. A can fill it in 20 minutes...

    Text Solution

    |

  8. Two pipes A and B can separately fill a tank in 6 hours and 8 hours , ...

    Text Solution

    |

  9. A cistern has two taps which fill it in 12 minutes and 15 mintues resp...

    Text Solution

    |

  10. Two taps can separately fill a cistern in 10 minutes and 15 minutes re...

    Text Solution

    |

  11. A water tank is 2/5 th full. Pipe A can fill the tank in 10 minutes an...

    Text Solution

    |

  12. Tap 'A' can fill a water tank in 25 minutes , tap 'B' can fill the sam...

    Text Solution

    |

  13. A pipe can fill a tank in 5 hours and a second pipe can empty it in 4 ...

    Text Solution

    |

  14. A pump can fill a tank with water in 2 hours. Because of a leak in the...

    Text Solution

    |

  15. Two pipe A and B can separately fill a cistern in 60 minutes and 75 mi...

    Text Solution

    |

  16. A tap can fill a cistern in 6 hours. After half of the tank is filled,...

    Text Solution

    |

  17. A pump can fill a tank with water in 2 hours. Because of a leak in the...

    Text Solution

    |

  18. Two pipes A and B can fill a tank in 6 hours and 4 hours respectively ...

    Text Solution

    |

  19. Three taps A, B and C can fill a tank in 12, 15 and 20 hours respectiv...

    Text Solution

    |

  20. Two pipes A and B can fill a water tank in 20 and 24 minutes respectiv...

    Text Solution

    |