Question
Perry and Betty started driving at 11.40 a.m. from City X and headed towards City Y which was 252 km away. Perry took 4 hours to complete his journey. Betty's average speed was 7 km/h faster than Perry's. At what time did Betty arrive at City Y?
3 m

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Perry and Betty started driving at 11.40 a.m. from City X and headed towards City Y which was 252 km away. Perry took 4 hours to complete his journey. Betty's average speed was 7 km/h faster than Perry's. At what time did Betty arrive at City Y?