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    Question

    A 150-metre train takes 6 seconds to cross a pole. If

    the same train takes 12 seconds to cross train 'C' that is travelling in opposite direction at 20 m/s on a parallel track, then find the length of train 'C'.
    A 260 Correct Answer Incorrect Answer
    B 320 Correct Answer Incorrect Answer
    C 390 Correct Answer Incorrect Answer
    D 215 Correct Answer Incorrect Answer
    E None of these Correct Answer Incorrect Answer

    Solution

    ATQ, Speed of train 'A' = (150 ├╖ 6) = 25 m/s Let the length of train 'C' be 'x' metres. ATQ; (150 + x) ├╖ (25 + 20) = 12 Or, 150 + x = 540 So, 'x' = 540 - 150 = 390 Therefore, length of train 'C' = 390 metres

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