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SSC Sample Paper Mock Test-19 SSC CGL Tear-II Paper-1

  • question_answer
    A boat covers a distance of 30 km in 2 - h running downstream. While returning, it covers the same distance in\[3\frac{3}{4}\text{h}.\] What is the speed of the boat in still water?

    A) 8 km/h

    B)  12 km/h

    C)  14 km/h

    D)  10 km/h

    Correct Answer: D

    Solution :

    Speed downstream \[=\left( 30\times \frac{2}{5} \right)\text{km/h}=12\,\,\text{km/h}\] Speed upstream \[=\left( 30\times \frac{4}{15} \right)\text{km/h}=8\,\,\text{km/h}\] Speed of boat in still water \[=\frac{1}{2}(12+8)\text{km/h}=10\,\,\text{km/h}\]


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