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    Question

    A train 270 metre long takes 36 sec to cross a man

    running at a speed of 4 km/hr in the direction opposite to that of train. What is the speed of the train?
    A 23 km/hr Correct Answer Incorrect Answer
    B 18 km/hr Correct Answer Incorrect Answer
    C 30 km/hr Correct Answer Incorrect Answer
    D 20 km/hr Correct Answer Incorrect Answer

    Solution

    Let the speed of the train be x Relative speed = (x + 4) km/hr тЗТ (x + 4) = (270 ├Ч 18)/(36 ├Ч 5) тЗТ (x + 4) = (4860)/(180) тЗТ x + 4 = 27 тЗТ x = 27 тАУ 4 = 23 km/hr

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