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SSC Sample Paper SSC-CGL TIER - I Sample Test Paper-8

  • question_answer
    The speed of a motorboat in still water Is 22 km/m\ If the speed of the stream is 4.5 km/hr, then the ratio of the time taken in going a distance of 53 km along the stream and 70 km distance against the stream is:

    A) 3 : 5                 

    B) 1 : 1

    C) 1 : 2                 

    D) 2 : 3

    Correct Answer: C

    Solution :

    Speed downstream = (22+4.5) km/hr = 26.5 km/hr Time taken in going 53 kms along the stream =         \[\frac{53}{26.5}=2\,hours\] Speed upstream = (22 - 4.5) = 17.5 km/hr Time taken in going 70 kms against stream =         \[\frac{70}{17.5}=4\]hours Required ratio = \[\frac{2}{4}\Rightarrow \]1: 2


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