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    Question

    With an average speed of 50km/h, a train reaches its

    destination in time. If it goes with an average speed of 40km/h, it is late by 30 minutes to reach its destination. What is the length of the total journey?
    A 100 km Correct Answer Incorrect Answer
    B 110 km Correct Answer Incorrect Answer
    C 90 km Correct Answer Incorrect Answer
    D 105 km Correct Answer Incorrect Answer

    Solution

    The correct answer is A

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