Question
Charlie and Cathy were in a roller skating race. Charlie was travelling at a constant speed of 18 km/h and they both did not change their speed. When Cathy completed half of her race, Charlie was 3.6 km ahead. Charlie completed the race at 11.15 a.m. What time did Cathy complete the race?
3 m

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Charlie and Cathy were in a roller skating race. Charlie was travelling at a constant speed of 18 km/h and they both did not change their speed. When Cathy completed half of her race, Charlie was 3.6 km ahead. Charlie completed the race at 11.15 a.m. What time did Cathy complete the race?