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Railways Quantitative Aptitude Boats & Streams Sample Paper Boats and Streams Sample Test Paper-14

  • question_answer
    A man rows upstream 24 km and downstream 36 km taking 6 hours each. Find the speed of current.

    A)  0.5 km/h          

    B)  1 km/h

    C)  1.5 km/h          

    D)  2 km/h

    Correct Answer: B

    Solution :

    [b]        Let man?s rowing speed in still water = x km/hr Let speed of current = y km/hr. Downstream speed \[=x+y=\frac{36}{6}=6\]             ? (1) Upstream speed \[=x-y=\frac{24}{6}=4\]                         ? (2) (1) ? (2) \[2y=2\Rightarrow y=1\] \[\therefore\]  Speed of current = 1 km/hr


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