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Railways R.R.C. (Ahmedabad) Solved Paper Held on 1st Shift 9-11-2014

  • question_answer
    A person travels a distance of 150 km at an average speed of 50 kmph and returns the same distance at the speed of 30 kmph. His average speed for the whole journey in kmph is?

    A) 35                                

    B) 37

    C) 37-5                 

    D) 40

    Correct Answer: C

    Solution :

    Total time\[=\frac{150}{50}+\frac{150}{30}\] \[=3+5\] = 8 hours Now, Average speed \[=\frac{150+150}{8}\] \[=\frac{300}{8}\] \[=37.5\,\,kmph\]


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