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CLAT CLAT Solved Paper-2018

  • question_answer
    If a person travels at a speed of 40 km/h, he will reach his destination on time. He covered half the journey in 2/3 of the time. At what speed (in km/h) should he travel to cover the remaining journey to reach the destination on time?

    A) 48        

    B)        50      

    C) 60        

    D)        72

    Correct Answer: C

    Solution :

    Sol. [c]
    Let the person takes 3th to reach his destination with a speed of 40 km/h.
    \[\therefore \]Distance travelled \[=\,40\times 3\,=\,120km\]
    Now distance travelled in \[\frac{2}{3}\,(3\,t)\,h\,=\,60\,t\]
    \[\therefore \] Distance travelled in t hours finally
    \[=\,120\,t\,-\,60\,t\,=\,60\,t\,km\]
     \[Speed\,=\,\frac{Dis\tan ce}{Time}\,=\,\frac{60\,t}{t}\,=\,60km/h\]


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