Question
Justin and Ivory started driving at 10.39 a.m. from City X and headed towards City Y which was 312 km away. Justin took 4 hours to complete his journey. Ivory's average speed was 2 km/h faster than Justin's. At what time did Ivory arrive at City Y?
3 m

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Justin and Ivory started driving at 10.39 a.m. from City X and headed towards City Y which was 312 km away. Justin took 4 hours to complete his journey. Ivory's average speed was 2 km/h faster than Justin's. At what time did Ivory arrive at City Y?