Home
Class 14
MATHS
There are two pumps to fill a tank with ...

There are two pumps to fill a tank with water. First pump can fill the empty tank in 8 hours, while the second in 10 hours. If both the pumps are opened at the same time and kept open for 4 hours, the part of tank that will be filled up is :

A

`1/5`

B

`9/10`

C

`1/10`

D

`2/5`

Text Solution

Verified by Experts

The correct Answer is:
B
Promotional Banner

Topper's Solved these Questions

  • PRACTICE SET-8

    UPKAR PUBLICATION |Exercise PART-III QUANTITATIVE APTITUDE |39 Videos

  • PROBABILITY

    UPKAR PUBLICATION |Exercise QUESTION BANK|110 Videos

Similar Questions

Explore conceptually related problems

Pipe A can fill a tank in 6 hours. Pipe B can empty it in 15 hours. If both the pipes are opened together, then the tank will be filled in how many hours?

Pipe A can fill the tank in 12 hours and pipe B can fill the tank in 8 hours. A third pipe C empties the tank in 15 hours. If all pipes are opened together then after 5 hours what portion of the tank will be filled.

Pipe A can fill a tank in 12 hours. Pipe B can empty it in X hours. If both the pipes are opened together, then the tank will be filled in 30 hours. Find X

A pipe can fill a tank in 4 hours and another pipe can empty the same tank in 6 hours. When both the pipes are opened simultaneously, the part of tank filled in 1 hour is …………..

A pipe can fill a tank in 4 hours and another pipe can empty the same tank in 6 hours. When both the pipes are opened simultaneously, the part of tank filled in 1 hour is …………..

Pipe A can fill an empty tank in 5 hours while pipe B can empty the full tank in 6 hours.If both are opened at the same time in the empty tank,how much time will they take to fill it up completely?

Pipe A can fill a tank in X hours. Pipe B can empty it in 15 hours. If both the pipes are opened together, then the tank will e filled in 7 hours and 30 minutes. Find X

Pipes A and B can fill an empty tank in 6 and 8 hours respectively, while pipe C can empty the full tank in 10 hours. If all three pipes are opened together, then the tank will get filled in:

Pipe A can fill a tank in 30 hours and pipe B in 45 hour.If both the pipes are opened in an empty tank how much time will they take to fill it?

UPKAR PUBLICATION -PRACTICE SET-9-Part- III (Quantative Aptitude )
  1. A man saves Rs. 2000 at the end of each year and invests the money at ...

    Text Solution

    |

  2. The length of the largest possible rod that can be placed in a cubical...

    Text Solution

    |

  3. There are two pumps to fill a tank with water. First pump can fill the...

    Text Solution

    |

  4. . The ratio of two numbers is 3 :4 and their H.C.F is 4 then their LCM...

    Text Solution

    |

  5. A sum was lent at simple interest at a certain rate for 2 years. Had i...

    Text Solution

    |

  6. A trader allows two successive discounts of 30% and 15% on selling an ...

    Text Solution

    |

  7. A cyclist, after cycling a distance of 70 km on the second day, find t...

    Text Solution

    |

  8. A profit of 10% is made after giving a discount of 5% in a T.V. If the...

    Text Solution

    |

  9. While selling to the retailer, a company allows 30% discount on the ma...

    Text Solution

    |

  10. The average of 10 items was found to be 80 but while calculating. one ...

    Text Solution

    |

  11. A man bought a horse and a carriage for 40,000. He sold the horse at a...

    Text Solution

    |

  12. If the diameter of a circle is increased by 8%. then its area is incre...

    Text Solution

    |

  13. A train covers a certain distance in 210 minute at a speed of 60 kmph ...

    Text Solution

    |

  14. The value of (sqrt(4^(3) + 15^(2)))^(3) is :

    Text Solution

    |

  15. By selling 4 articles for 1 rupee, a man loses 4%. Had he sold three a...

    Text Solution

    |

  16. If 5.5 of a= 0.65 of b, then a : b is equal to—

    Text Solution

    |

  17. An article is sold at a loss of 10%. Had it been sold for 90 more, the...

    Text Solution

    |

  18. A contractor undertook to finish a work in 92 days and employed 110 me...

    Text Solution

    |

  19. From a class of 42 boys, a boy aged 10 years goes away and in his plac...

    Text Solution

    |

  20. What is to be added to 15% of 160 so that the sum may be equal to 25% ...

    Text Solution

    |