Question
Riordan and Rachel started driving at 11.38 a.m. from City B and headed towards City C which was 243 km away. Riordan took 3 hours to complete his journey. Rachel's average speed was 9 km/h faster than Riordan's. At what time did Rachel arrive at City C?
3 m

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Riordan and Rachel started driving at 11.38 a.m. from City B and headed towards City C which was 243 km away. Riordan took 3 hours to complete his journey. Rachel's average speed was 9 km/h faster than Riordan's. At what time did Rachel arrive at City C?