Home
Class 14
MATHS
If a certain number of workmen can do a ...

If a certain number of workmen can do a piece of work in 25 hours, in how many hours will another set of an equal number of men, do a piece of work, twice as great, supposing that 2 men of the first set can do as much work in an hour, as 3 men of the second set do in an hour? `60` b. `\ 75` c. `90` d. `105`

A

60 days

B

75 days

C

90 days

D

105 days

Text Solution

Verified by Experts

The correct Answer is:
B
Promotional Banner

Topper's Solved these Questions

  • CALENDAR

    UPKAR PUBLICATION |Exercise QUESTION BANK|17 Videos
  • COMPOUND INTEREST

    UPKAR PUBLICATION |Exercise QUESTION BANK|59 Videos

Similar Questions

Explore conceptually related problems

If a certain number of workmen can do a piece of work in 25 hours,in how many hours will another set of an equal number of men,do a piece of work,twice as great,supposing that 2 men of the first set can do as much work in an hour,as 3 men of the second set do in an hour? 60 b.backslash75 c.90 d.105

If 36 men can do a piece of working 25 hours in how many hours will 15 men do it?

If 36 men can do a piece of work in 25 days, in how many days will 15 men do it?

If 52 men can do a piece of work in 35 days in how many days 28 men will do it?

If 45 men can do a piece of work in 49 days, in how many days will 35 men do it?

34 men can do a piece of work in 12 days . How many days will 51 men take to do it

8 men can finish a piece of work in 15 hours.In how many hours can 20 men finish it?

Six men can complete a piece of work in 48 hours. In how many hours will 24 men complete the same piece of work?

UPKAR PUBLICATION -CHAIN RULE-QUESTION BANK
  1. If 22.5 metres of a uniform iron rod weighs 85.5 kg. What will be the ...

    Text Solution

    |

  2. If 16 men can rep a field in 30 days.in how many days will 20 men reap...

    Text Solution

    |

  3. If 21 cows eat as much as 15 buffaloes.how many cows will eat as much ...

    Text Solution

    |

  4. 10 pipes of the same diameter can fill a tank in 24 minutes.If 2 pipes...

    Text Solution

    |

  5. If (4/5) th of a cistern is filled in 1 minute, how much more time wil...

    Text Solution

    |

  6. In a race,Raghu covers 5 m in 20 minutes.how much distance will be cov...

    Text Solution

    |

  7. A rope makes 140 rounds of the circumference of a cylinder.the radius ...

    Text Solution

    |

  8. A contractor employed 30 men to do a piece of work in 38 days. Afte...

    Text Solution

    |

  9. 2 men and 7 boys can do a piece of work in 14 days; 3 men and 8 boys c...

    Text Solution

    |

  10. If 3 men or 6 boy, can do a piece of work in 10 days, working 7 hou...

    Text Solution

    |

  11. If 5 engines consume 6 metric tonnes of coal when each is running 9...

    Text Solution

    |

  12. If 9 men working 7 1/2 hours a day can finish a piece of work in 20 da...

    Text Solution

    |

  13. If a certain number of workmen can do a piece of work in 25 hours, ...

    Text Solution

    |

  14. 15 men take 21 days of 8 hours each to do a piece of work How many ...

    Text Solution

    |

  15. A contract to be completed in 56 days and 104 men were set towork each...

    Text Solution

    |

  16. A contractor undertakes to do a piece of work in 40 days. He engage...

    Text Solution

    |

  17. A contractor undertook to do a piece of work in 9 days. He employed ce...

    Text Solution

    |

  18. If 12 boys can earn Rs.240 in 5 days. How many boys can earn Rs. 420 i...

    Text Solution

    |

  19. If 27 kg of carn would feed 42 horses for 21 days, in how many days wo...

    Text Solution

    |

  20. If 5 men working 6 hours a day can reap a field in 20 days. In how man...

    Text Solution

    |