Question
Jack and Cindy were in a roller skating race. Jack was travelling at a constant speed of 20 km/h and they both did not change their speed. When Cindy completed half of her race, Jack was 2.5 km ahead. Jack completed the race at 9.40 a.m. What time did Cindy complete the race?
3 m

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Jack and Cindy were in a roller skating race. Jack was travelling at a constant speed of 20 km/h and they both did not change their speed. When Cindy completed half of her race, Jack was 2.5 km ahead. Jack completed the race at 9.40 a.m. What time did Cindy complete the race?