Question
Ethan and Gwen were in a roller skating race. Ethan was travelling at a constant speed of 20 km/h and they both did not change their speed. When Gwen completed half of her race, Ethan was 3.5 km ahead. Ethan completed the race at 10.40 a.m. What time did Gwen complete the race?
3 m

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Ethan and Gwen were in a roller skating race. Ethan was travelling at a constant speed of 20 km/h and they both did not change their speed. When Gwen completed half of her race, Ethan was 3.5 km ahead. Ethan completed the race at 10.40 a.m. What time did Gwen complete the race?