Question
Zeph and Usha were in a roller skating race. Zeph was travelling at a constant speed of 21 km/h and they both did not change their speed. When Usha completed half of her race, Zeph was 2.1 km ahead. Zeph completed the race at 11.25 a.m. What time did Usha complete the race?
3 m

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Zeph and Usha were in a roller skating race. Zeph was travelling at a constant speed of 21 km/h and they both did not change their speed. When Usha completed half of her race, Zeph was 2.1 km ahead. Zeph completed the race at 11.25 a.m. What time did Usha complete the race?