Railways Sample Paper RRBs Assistant Loco Pilot and Technician CBT STAGE-I Sample Paper-12

  • question_answer
    Samantha, Jessica and Roseline begin to jog around a circular stadium. They complete their revolutions in 84 s, 56 s and 63 s respectively. After how many seconds will they be together at the starting point?

    A)  336                 

    B)         504

    C)  252                 

    D)         Cannot be determined

    Correct Answer: B

    Solution :

    \[\therefore \] \[LCM=2\times 2\times 2\times 3\times 3\times 7=504\] Hence, they will meat after 504 s.

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