Question
Jack and Betty were in a roller skating race. Jack was travelling at a constant speed of 18 km/h and they both did not change their speed. When Betty completed half of her race, Jack was 3.6 km ahead. Jack completed the race at 9.45 a.m. What time did Betty complete the race?
3 m

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Jack and Betty were in a roller skating race. Jack was travelling at a constant speed of 18 km/h and they both did not change their speed. When Betty completed half of her race, Jack was 3.6 km ahead. Jack completed the race at 9.45 a.m. What time did Betty complete the race?