ЁЯУв Too many exams? DonтАЩt know which one suits you best? Book Your Free Expert ЁЯСЙ call Now!

    Question

    The speed of train A is 120 km/h and it takes 15 seconds

    to cross a pole. Find the approximately time taken by train A to cross train B that is running with the speed 72 km/h in the same direction, and the length of train B is 540 meters.
    A 22 seconds Correct Answer Incorrect Answer
    B 78 seconds Correct Answer Incorrect Answer
    C 45 seconds Correct Answer Incorrect Answer
    D 32 seconds Correct Answer Incorrect Answer
    E 57 seconds Correct Answer Incorrect Answer

    Solution

    Speed of Train A = 120 km/h = (120 ├Ч 5/18) = 100/3 m/s
    Length of Train A = 100/3 ├Ч 15 = 500 meters
    Relative speed = 120 - 72 = 48 km/h = (48 ├Ч 5/18) = 40/3 m/s
    Total Distance = 500 + 540 = 1040 meters
    Time = 1040/(40/3) = 78 seconds

    Practice Next
    More Trains Questions

    Relevant for Exams:

    ask-question