Question
Luke and Usha were in a roller skating race. Luke was travelling at a constant speed of 18 km/h and they both did not change their speed. When Usha completed half of her race, Luke was 3.6 km ahead. Luke completed the race at 9.20 a.m. What time did Usha complete the race?
3 m

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Luke and Usha were in a roller skating race. Luke was travelling at a constant speed of 18 km/h and they both did not change their speed. When Usha completed half of her race, Luke was 3.6 km ahead. Luke completed the race at 9.20 a.m. What time did Usha complete the race?