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      Question

      Two cities M and N are 432 km apart. A bus leaves M at

      7:15 a.m. at 48 km/h. Another bus leaves N at 8:45 a.m. towards M at 72 km/h. At what time will they meet?
      A 11:30 a.m. Correct Answer Incorrect Answer
      B 11:45 a.m. Correct Answer Incorrect Answer
      C 12:00 p.m. Correct Answer Incorrect Answer
      D 12:15 p.m. Correct Answer Incorrect Answer

      Solution

      Time gap = 1.5 hrs тЖТ Distance = 48 ├Ч 1.5 = 72 km
      Remaining = 432 тАУ 72 = 360 km
      Relative speed = 120 km/h
      Time = 360 / 120 = 3 hours
      Meeting time = 8:45 a.m. + 3h = 11:45 a.m.

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