Multiple Choice Questions on A boat goes 6 km against the current of the stream in 2 hours and goes 8 km along the current in hal........... for Mathematics - All Exams Preparation

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Multiple Choice Questions

A boat goes 6 km against the current of the stream in 2 hours and goes 8 km along the current in hal...........

Quantitative Aptitude ( CCS) Boats and Streams
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    A boat goes 6 km against the current of the stream in 2 hours and goes 8 km along the current in half hour. How long will it take to go 28.5 km in stationary water?

    4 1/2 hours

    Incorrect Answer

    3 hours

    Correct Answer

    3 1/2 hours

    Incorrect Answer

    4 hours

    Incorrect Answer
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    Explanation:

    Speed upstream = 6/2 = 3, speed downstream = 8/(1/2) = 16
    Speed of boat = 1/2(3+16) = 9.5 km/hr
    So time in still water = 28.5/9.5 = 3 hours.

    By: Pranav Gupta
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