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SSC Sample Paper Mock Test-5 SSC CGL Tear-II Paper-1

  • question_answer
    A boat goes downstream in one-third the time it takes to go upstream. Then, the ratio between the speed of boat in still water and that of the stream is

    A)  3 : 1                            

    B)  1 : 3   

    C)  1 : 2                            

    D)  2 : 1

    Correct Answer: D

    Solution :

    Speed of boat = x m/sec Speed of stream = y m/sec Then, \[\frac{\text{Distance}\,\,\text{travelled}}{x+y}=\frac{1}{3}\left( \frac{\text{Distance}\,\,\text{travelled}}{x-y} \right)\] \[\Rightarrow \]   \[x=2y\therefore x:y=2:1\]


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