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    Question

    Express train leaves Bengaluru at a certain time. After 3

    hours, another train departs and moves in the same direction at the speed of 180 km/h. If this second train catches up the Express train in 9 hours, what is the speed of the Express train?
    A 135 km/h Correct Answer Incorrect Answer
    B 120 km/h Correct Answer Incorrect Answer
    C 150 km/h Correct Answer Incorrect Answer
    D 110 km/h Correct Answer Incorrect Answer

    Solution

    Distance travelled by second train in 9 hours = 180 × 9 = 1620 km
    Speed of Express train = 1620 / (3 + 9) = 135 km/hr

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