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    Question

    The distance between city L and city M is 624 km. A train

    starts from L at 8 a.m. at 48 km/h. Another train starts from M at 9:30 a.m. towards L at a speed of 96 km/h. When will they meet?
    A 12:50 p.m. Correct Answer Incorrect Answer
    B 1:10 p.m. Correct Answer Incorrect Answer
    C 1:20 p.m. Correct Answer Incorrect Answer
    D 1:30 p.m. Correct Answer Incorrect Answer
    E 1:40 p.m. Correct Answer Incorrect Answer

    Solution

    Time gap = 1.5 hours → Distance = 48 × 1.5 = 72 km
    Remaining distance = 624 – 72 = 552 km
    Relative speed = 144 km/h
    Time = 552 / 144 = 3.833 hrs = 3h 50m
    Meeting time = 9:30 a.m. + 3h 50m = 1:20 p.m.

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