Railways Quantitative Aptitude Trains Sample Paper Trains Sample Test Paper-13

  • question_answer
    A train running between two stations A and B arrives at its destination 10 minutes late when its speed is 50 km/h and 50 minutes late when its speed is 30 km/h. What is the distance between the stations A and B?

    A)  40 km

    B)         50 km

    C)  60 km 

    D)  70 km

    Correct Answer: B

    Solution :

    [b] Let the distance between the two stations be x km. Then, \[\frac{x}{50}-\frac{10}{6}=\frac{x}{30}-\frac{50}{6}\] \[\Rightarrow \] \[\frac{x}{50}-\frac{1}{6}=\frac{x}{30}-\frac{5}{6}\] or \[\frac{x}{30}-\frac{x}{50}=\frac{2}{3}\]       or x = 50 km Thus distance between the station A and B = 50 km

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