Multiple Choice Questions on A train 120 m long takes 6 seconds to pass a telegraph post the speed of train is ........ for Mathematics - All Exams Preparation

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Multiple Choice Questions

A train 120 m long takes 6 seconds to pass a telegraph post the speed of train is ........

Quant (SSC) Problems on trains
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    A train, 120 m long, takes 6 seconds to pass a telegraph post; the speed of train is 

    72 km/hr

    Correct Answer

    62 km/hr

    Incorrect Answer

    80 km/hr

    Incorrect Answer

    85 km/hr

    Incorrect Answer
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    Explanation:

    To solve this question, we can apply a short trick approach we get
    Speed of train = Length of train / Time taken in crossing the pole
    = 120 /6 = 20 m/sec.
    = 20 x 18/5 = 72 km/hr

    By: Amit Kumar
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