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Railways Sample Paper RRB (Group D) Sample Test Paper-6

  • question_answer
    Buses start from a bus terminal with a speed of 20 km/hr at intervals of 10 minutes. What is the speed of a man coming from the opposite direction towards the bus terminal if he meets the buses at intervals of 8 minutes?

    A)  3 km/hr

    B)  4 km/hr

    C)  5 km/hr

    D)  7 km/hr

    Correct Answer: C

    Solution :

    [c] Distance coverd in 10 minutes at 20kmph=distance covered in 8 minutes at (20+x) kmph \[\Rightarrow \,\,\,20\times \frac{10}{60}=\frac{8}{60}(20+x)\] \[\Rightarrow \,\,\,200=160+8x\] \[\Rightarrow \,\,\,8x=40\] \[\Rightarrow \,\,\,x=\frac{40}{8}=5kmph\]


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