Multiple Choice Questions on If the ratio of speed of boat in downstream and speed of stream is 9 1 speed of current is 3 km per ........... for Mathematics - All Exams Preparation

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Multiple Choice Questions

If the ratio of speed of boat in downstream and speed of stream is 9 1 speed of current is 3 km per ...........

Quant (SSC) Boats and Streams
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    If the ratio of speed of boat in downstream and speed of stream is 9 : 1, speed of current is 3 km per hr, What would be the distance travelled in upstream by the boat in 5 hours?

    90 km

    Incorrect Answer

    97 km

    Incorrect Answer

    115 km

    Incorrect Answer

    105 km

    Correct Answer
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    Explanation:
    Ratio of speed of boat in downstream and speed of stream is 9 : 1
    Given Speed of current = 3 km/ h
    Speed of boat in downstream = 9 × 3 = 27 km/h
    Speed of boat in still water = Speed of boat in downstream – Speed of current
    = 27 – 3 = 24 km/h
    Speed of boat in upstream = 24 – 3 = 21 km/h
    Distance travelled by boat in upstream in 5 hours = 21 × 5 = 105 km

    By: Amit Kumar
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