Home
Class 14
MATHS
A can complete a piece of work in 20 day...

A can complete a piece of work in 20 days and B can complete 20% of the work in 6 days. If they work together in how many days can they finish 50% of the work, if they work together ?
A किसी कार्य को 20 दिनों में तथा B इस कार्य के 20% भाग को 6 दिनों में पूरा कर सकता है | यदि वे साथ कार्य करें, तो वे इस कार्य का 50% भाग कितने दिनों में पूरा करेंगे ?

A

12

B

6

C

8

D

9

Text Solution

Verified by Experts

Promotional Banner

Topper's Solved these Questions

PINNACLE-WORK AND TIME-EXERCISE
  1. A and B can complete a piece of work in 15 days and 10 days respective...

    Text Solution

    |

  2. Rs. 10,000 has to be distributed among 3 craftsmen, 5 helpers and 6 la...

    Text Solution

    |

  3. A can complete a piece of work in 20 days and B can complete 20% of th...

    Text Solution

    |

  4. A, B and C, alone can do a piece of work in 9, 12 and 18 days respecti...

    Text Solution

    |

  5. A and B can finish a work together in 30 days, B and C can finish the ...

    Text Solution

    |

  6. A can do work in 12 days. B can do work in 18 days. After 5 days of wo...

    Text Solution

    |

  7. 6 men or 5 women earn Rs 14,820 in two days. How much will 4 women and...

    Text Solution

    |

  8. A can do a work in 20 days, while B can do the same work in 25 days. T...

    Text Solution

    |

  9. The ratio of efficiencies of A , B and C is 7 : 5 : 8. Working togethe...

    Text Solution

    |

  10. A can do 40% of a work in 6 days and B can do 30% of the same work in ...

    Text Solution

    |

  11. To do a certain work, the ratio of efficiency of A to that of B is 3:7...

    Text Solution

    |

  12. A and B can do a piece of work in 6 days and 8 days, respectively. Wit...

    Text Solution

    |

  13. A certain number of persons can complete a work in 34 days working 9 h...

    Text Solution

    |

  14. 4 men and 5 women can complete a work in 15 days, whereas 9 men and 6 ...

    Text Solution

    |

  15. To do a certain work, the ratio of the efficiencies of X and Y is 5:4....

    Text Solution

    |

  16. A can do 40% of a work in 12 days, whereas B can do 60% of the same wo...

    Text Solution

    |

  17. A is as efficient as B and C together. Working together A and B can co...

    Text Solution

    |

  18. A can do one-third of a work in 15 days, B can do 75% of the same work...

    Text Solution

    |

  19. 25 persons can complete a work in 60 days. They started the work. 10 p...

    Text Solution

    |

  20. The ratio of the efficiencies of A, B and C is 4 : 5 : 3. Working toge...

    Text Solution

    |