Question
Riordan and Nora were in a roller skating race. Riordan was travelling at a constant speed of 20 km/h and they both did not change their speed. When Nora completed half of her race, Riordan was 2.5 km ahead. Riordan completed the race at 10.30 a.m. What time did Nora complete the race?
3 m

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Riordan and Nora were in a roller skating race. Riordan was travelling at a constant speed of 20 km/h and they both did not change their speed. When Nora completed half of her race, Riordan was 2.5 km ahead. Riordan completed the race at 10.30 a.m. What time did Nora complete the race?