Multiple Choice Questions on A boat can cover 21 km in the direction of current and 15 km against the current in 3 hours each Fin........... for Mathematics - All Exams Preparation

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Multiple Choice Questions

A boat can cover 21 km in the direction of current and 15 km against the current in 3 hours each Fin...........

Quantitative Aptitude ( CCS) Boats and Streams
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    A boat can cover 21 km in the direction of current and 15 km against the current in 3 hours each. Find the speed of current.

    4.5 km/hr

    Incorrect Answer

    2.5 km/hr

    Incorrect Answer

    3 km/hr

    Incorrect Answer

    1 km/hr

    Correct Answer
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    Explanation:

    Solution: 
    Downstream speed = 21/3 = 7 km/hr
    Upstream speed = 15/3 = 5 km/hr
    So speed of current = 1/2 * (7-5) =1 km/hr

    By: Pranav Gupta
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