Multiple Choice Questions on The speed of a boat along the stream is 12 km hr and against the stream is 8 km hr the time taken by........... for Mathematics - All Exams Preparation

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Multiple Choice Questions

The speed of a boat along the stream is 12 km hr and against the stream is 8 km hr the time taken by...........

Quantitative Aptitude ( CCS) Boats and Streams
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    The speed of a boat along the stream is 12 km/hr and against the stream is 8 km/hr . the time taken by the boat to sail 24 km in still water is

    2 hrs

    Incorrect Answer

    3 hrs

    Incorrect Answer

    2.4 hrs

    Correct Answer

    1.2 hrs

    Incorrect Answer
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    Explanation:

    Speed of Downstream, D = 12 km/h
    Speed of Upstream, U = 8 km/h
    Speed of boat in still water = (D + U)/2 = 10 km/h
    Time taken by the boat in still water = 24 km/ 10 km/h = 2.4 hours

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