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    Question

    Two towns D and E are 576 km apart. A bus starts from D at

    5:15 a.m. at 64 km/h. Another bus starts from E at 6:45 a.m. towards D at 80 km/h. When will they meet?
    A 9:50 a.m. Correct Answer Incorrect Answer
    B 10:05 a.m. Correct Answer Incorrect Answer
    C 10:15 a.m. Correct Answer Incorrect Answer
    D 10:25 a.m. Correct Answer Incorrect Answer
    E 10:30 a.m. Correct Answer Incorrect Answer

    Solution

    Time gap = 1.5 hrs → Distance = 64 × 1.5 = 96 km
    Remaining = 576 – 96 = 480 km
    Relative speed = 144 km/h
    Time = 480 / 144 = 3.33 hours = 3h 20m
    Meeting time = 6:45 a.m. + 3h 20m = 10:05 a.m.

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