Question
Billy and Opal started driving at 11.39 a.m. from City A and headed towards City B which was 345 km away. Billy took 5 hours to complete his journey. Opal's average speed was 6 km/h faster than Billy's. At what time did Opal arrive at City B?
3 m

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Billy and Opal started driving at 11.39 a.m. from City A and headed towards City B which was 345 km away. Billy took 5 hours to complete his journey. Opal's average speed was 6 km/h faster than Billy's. At what time did Opal arrive at City B?