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    Question

    A train, measuring 450 meters in length and traveling at

    a speed of 35 meters per second, takes 20 seconds to pass a platform. If another train, traveling at a speed of 20 meters per second, crosses the same platform in 25 seconds, determine the length of the second train.
    A 240 metres Correct Answer Incorrect Answer
    B 220 metres Correct Answer Incorrect Answer
    C 210 metres Correct Answer Incorrect Answer
    D 250 metres Correct Answer Incorrect Answer

    Solution

    Let assume the length of the platform is 'x' metres and length of train 'B' is 'y' metres ATQ; (450 + x) = (20 X 35) Or, 450 + x = 700 Or, x = 250 And, (y + 250) = 25 X 20 Or, y + 250 = 500 Or, y = 250 So, length of train 'B' = 250 metres. Hence, option d.

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