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    Question

    Train B takes 30 seconds to cross a pole and 90 seconds

    to cross a 900-meter-long bridge. If the length of the train had been 450 meters, find the time taken by it to cross a 300-meter-long bridge with the same speed.
    A 45 seconds Correct Answer Incorrect Answer
    B 50 seconds Correct Answer Incorrect Answer
    C 55 seconds Correct Answer Incorrect Answer
    D 60 seconds Correct Answer Incorrect Answer
    E 65 seconds Correct Answer Incorrect Answer

    Solution

    According to the question,
    Time taken to cross the bridge minus time to cross the pole = 90 - 30 = 60 seconds
    Distance covered in 60 seconds = length of the bridge = 900 meters
    Speed of the train = 900 / 60 = 15 m/sec
    Total distance to be travelled = length of train

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