Question
Pierre and Cathy were in a roller skating race. Pierre was travelling at a constant speed of 20 km/h and they both did not change their speed. When Cathy completed half of her race, Pierre was 3.5 km ahead. Pierre completed the race at 11.05 a.m. What time did Cathy complete the race?
3 m

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Pierre and Cathy were in a roller skating race. Pierre was travelling at a constant speed of 20 km/h and they both did not change their speed. When Cathy completed half of her race, Pierre was 3.5 km ahead. Pierre completed the race at 11.05 a.m. What time did Cathy complete the race?