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SSC Quantitative Aptitude Boats & Streams Question Bank Train and Boat (I)

  • question_answer
    A man can row a certain distance against the stream in 6 h. However, he would take 2 h less to cover the same distance with the current. If the speed of J the current is 2 km/h, then what is the rowing speed in still water

    A) 10 km/h

    B) 12 km/h

    C) 14 km/h

    D) 8 km/h

    Correct Answer: A

    Solution :

    [a] Let the speed of boat in still water be .x: km/h. Then, according to the question, \[6\,(x-2)=4\,(x+2)\] \[\Rightarrow \]            \[6x-12=4x+8\] \[\Rightarrow \]            \[2x=20\] \[\therefore \]    \[x=10\,km/h\]


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