Question

    A train is travelling at the rate of 72 km/hr. How many seconds it will take to cover a distance of 2/5 km?

    A 80 sec Correct Answer Incorrect Answer
    B 50 sec Correct Answer Incorrect Answer
    C 25 sec Correct Answer Incorrect Answer
    D 24 sec Correct Answer Incorrect Answer
    E 20 sec Correct Answer Incorrect Answer

    Solution

    Speed of train = 72 km/hr Speed of train in (m/sec) = 72 x 5/18 = 20 m/sec Distance = 2/5 of 1 km = 2/5 x 1000 m = 400 m Therefore, Speed = distance/time 20 = 400/t Time = 400/20 = 20 sec

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