Multiple Choice Questions on The speed of a boat along the stream is 8 km h and against the stream is 6 km hr The time taken by t........... for Mathematics - All Exams Preparation

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Multiple Choice Questions

The speed of a boat along the stream is 8 km h and against the stream is 6 km hr The time taken by t...........

Quant (SSC) Boats and Streams
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    The speed of a boat along the stream is 8 km/h and against the stream is 6 km/hr. The time taken by the boat to sail 28 km in still water is

    2 hrs

    Incorrect Answer

    3 hrs

    Incorrect Answer

    4 hrs

    Correct Answer

    8 hrs

    Incorrect Answer
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    Explanation:

    Given, Speed downstream = 8 km/h Speed upstream = 6 km/h
    ∴ Speed of boat in still water
    = Speed downstream + Speed Upstream /2
    = 8 + 6 /2 = 14 /2
    = 7 km/hr
    ∴ Reqd time = Distance / Speed of Boat
    = 28/7 = 4 hrs

    By: Amit Kumar
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