Home
Class 14
MATHS
The ratio of speed of boat in still wate...

The ratio of speed of boat in still water to speed of stream is 8:1. It takes 4 hours by boat to cover 54 km, in downstream & 42 km in upstream. Find the downstream speed of boat

A

A)25 kmph

B

B)24 kmph

C

C)21 kmph

D

D)27 kmph

Text Solution

Verified by Experts

The correct Answer is:
D
Promotional Banner

Topper's Solved these Questions

  • BOAT AND STREAM

    ADDA247|Exercise Mains Questions|15 Videos
  • AVERAGE AND AGES

    ADDA247|Exercise Previous Year Question|30 Videos
  • DATA INTERPRETATION

    ADDA247|Exercise Previous Year Questions|56 Videos
ADDA247-BOAT AND STREAM -Previous Year Question
  1. The ratio of speed of boat in still water to speed of stream is 8:1. I...

    Text Solution

    |

  2. Time taken by a boat to cover 162 km each in downstream and in upstrea...

    Text Solution

    |

  3. A boat takes 4 hrs to cover 'D' km in upstream and takes 3 hours to co...

    Text Solution

    |

  4. Difference of speed of boat in downstream and upstream is 7km/hr and t...

    Text Solution

    |

  5. If a boat travels 18 km more in downstream than in upstream in 3 hr. a...

    Text Solution

    |

  6. A boat covers 36 km in upstream in 2 hours and 66 km in downstream in ...

    Text Solution

    |

  7. Speed of boat in still water is 37.5% less than the speed of the boat ...

    Text Solution

    |

  8. The time take by a boat in upstream is double than the time taken by i...

    Text Solution

    |

  9. A boat can cover 28 km downstream in 42 min. ratio of speed of boat in...

    Text Solution

    |

  10. Speed of a boat in still water is 12 kmph and speed of stream is 'X' k...

    Text Solution

    |

  11. The downstream speed of a boat is 5 km/hr more than its upstream speed...

    Text Solution

    |

  12. Speed of boat in still water is six-times of speed of stream. If boat ...

    Text Solution

    |

  13. The upstream speed and downstream speed of a boat is 10 kmph and 14 km...

    Text Solution

    |

  14. Difference between downstream speed and upstream speed is 4 kmph. If s...

    Text Solution

    |

  15. The ratio of speed of a boat in still water to speed of the current is...

    Text Solution

    |

  16. Find the total distance covered by boat in each upstream and downstrea...

    Text Solution

    |

  17. The current of a stream runs at the rate of 4km an hour . A boat ...

    Text Solution

    |

  18. A man can row 15 km/h downstream and 9 km/h upstream. The speed of the...

    Text Solution

    |

  19. A boat running downstream covers a distance of 20 km in 2 hrd w...

    Text Solution

    |

  20. In a fixed time, a boy swims double the distance along the current tha...

    Text Solution

    |