Home
Class 8
MATHS
Spinning 3 hours daily, Kanta can spi...

Spinning 3 hours daily, Kanta can spin 2 kg cotton-balls in 12 days. Spinning 4 hours daily, how many days will she take to spin 10 kg cotton balls?

Promotional Banner

Topper's Solved these Questions

  • SQUARES AND SQUARE ROOTS

    RD SHARMA ENGLISH|Exercise All Questions|183 Videos
  • UNDERSTANDING PHASE-II (QUADRILATERALS)

    RD SHARMA ENGLISH|Exercise All Questions|46 Videos

Similar Questions

Explore conceptually related problems

A man can work 8 hours daily and finishes a work in 12 days. If he works 6 hrs daily, in how many days will the same work be finished?

Working 8 hours a day, Ashu can a book in 18 days. How many hours a day should he work so as to finish the work in 12 days?

A gobar gas plant produces methane and supplies to the families. If a family requires 15,000 kJ of energy per day, how many days will the quote of 10 kg will last ? (Delta_(c)H "of" CH_(4) = - "1665 kJ "mol^(-1))

In 15 days, the earth picks up 1.2 x 10^8 kg of dust from the atmosphere. In how many days it will pick up 4.8 x 10^8 kg of dust?

A\ a n d\ B can polish the floors of a building in 10 days. A alone can do 1/4 of work in 12 days. In how many days can B alone polish the floor?

A can do a piece of work in 24 days, A and B can do it in 16 days and A,B and C in 10(2)/(3) days. In how many days can A and C do it working together ?

A can do (1)/(3) of a certain work in 12 days and B can do (1)/(6) of the same work in 4 days. Find, in how many days will they together complete the work ?

A and B together can do a piece of work in 6(2)/(3) days, but B along can do it in 10 days. How long will A take to do it alone ?

Peter begins his kindergarten year able to spell 10 words. He is going to learn to spell 2 new words every day. Which in inequality can be used to determine how many days, d, it takes Peter to be able to spell at least 85 words?

90 men can complete a work in 24 days working 8 hours a day. How many men are working 8 hours a day. How many men are required to complete the same work in 18 days working 7(1)/(2) hours a day ?

RD SHARMA ENGLISH-TIME AND WORK-All Questions
  1. Seema weaves 25 baskets in 35 days. In how many days will she weave...

    Text Solution

    |

  2. 15 boys earn Rs 900 in 5 days, how much will 20 boys earn in 7 days...

    Text Solution

    |

  3. Spinning 3 hours daily, Kanta can spin 2 kg cotton-balls in 12 days...

    Text Solution

    |

  4. Somari sweeps 600 m long railway platform in 2 1/2 hours. His wife Ima...

    Text Solution

    |

  5. A cistern can be filled by one tap in 8 hours, and by another in 4 hou...

    Text Solution

    |

  6. Pipe A can fill an empty tank in 6 hours and pipe B in 8 hours. If bot...

    Text Solution

    |

  7. A cistern can be filled by a tap in 6 hours and emptied by an outlet p...

    Text Solution

    |

  8. A pipe can fill a cistern in 6 hours. Due to a leak in the bottom i...

    Text Solution

    |

  9. A tank can be filled by two taps A\ a n d\ B in 12 hours and 16 hours ...

    Text Solution

    |

  10. Rakesh can do piece of work in 20 days. How much work can be do in ...

    Text Solution

    |

  11. Rohan can paint 1/3 of a painting in 6 days. How many days will he ...

    Text Solution

    |

  12. Anil can do a piece of work in 5 days and ankur in 4 days. How long wi...

    Text Solution

    |

  13. Mohan takes 9 hours to mow a large lawn. He and Sohan together can ...

    Text Solution

    |

  14. Sita can finish typing a 100 page document in 9 hours, Mita in 6 ho...

    Text Solution

    |

  15. A ,\ B\ a n d\ C working together can do a piece of work in 8 hours. A...

    Text Solution

    |

  16. A and B can do a piece of work in 18 days .B and C in 24 days and A an...

    Text Solution

    |

  17. A and B can do a piece of work in 12 days, B and C in 15 days, and C a...

    Text Solution

    |

  18. A ,\ B\ a n d\ C can reap a field in 15 3/4 days : B ,\ C\ a n d\ D in...

    Text Solution

    |

  19. A\ a n d\ B can polish the floors of a building in 10 days. A alone ca...

    Text Solution

    |

  20. A and B can finish a work in 20 days . A alone can do 1/5th of the wor...

    Text Solution

    |