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    Question

    The driver of an ambulance sees a bus 40 m ahead of

    him, after 20 seconds, the bus is 60 meter behind. If the speed of the ambulance is 30 km/h what is the speed of the bus?
    A 10 km/h Correct Answer Incorrect Answer
    B 12 km/h Correct Answer Incorrect Answer
    C 15 km/h Correct Answer Incorrect Answer
    D 22 km/h Correct Answer Incorrect Answer

    Solution

    The correct answer is B

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