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

  • question_answer
    A train consists of 12 boggies, each boggie 15 metres long. The train crosses the telegraph post in 18 seconds. Due to some problems, two bogies were detached. The train now crosses the telegraph post in

    A)  12 sec 

    B)  15 sec

    C)  10 sec 

    D)  None of these

    Correct Answer: B

    Solution :

    [b] Length of train\[=12\times 15=180\,m\] Time = 18 sec Speed\[=\frac{180}{18}=10m/\sec \] Now length of train\[=10\times 15=150\,m\] Speed = 10 m/sec Time\[=\frac{150}{10}=15\,\sec \]

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