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

    Question

    Train A and B can cross a 300 meters long platform in

    the same time. The length of Train A is 300 meters and the speed of Train B is 5/4 times the speed of Train A. If Train A crosses a bridge of the same length as of Train B in 50 seconds, then find the time (in seconds) taken by Train B to cross a tunnel 150 m long.
    A 22 Correct Answer Incorrect Answer
    B 24 Correct Answer Incorrect Answer
    C 26 Correct Answer Incorrect Answer
    D 28 Correct Answer Incorrect Answer
    E 30 Correct Answer Incorrect Answer

    Solution

    Let speed of train A = 4x meters/second
    And speed of train B = 5x meters/second
    Let length of train B = y meters ATQ, (y + 300)/5x = (300 + 300)/4x
    y + 300 = 750
    y = 450 meters Speed of train A = (300 + 450)/50 = 15 m/sec
    Speed of train B = 5/4 ├Ч 15 = 18.75 тЙИ 19 m/sec Required time = (450 + 150)/25 = 600/25 = 24 sec

    Practice Next
    More Trains Questions

    Relevant for Exams:

    ask-question