Question
Sam and Natalie were in a roller skating race. Sam was travelling at a constant speed of 21 km/h and they both did not change their speed. When Natalie completed half of her race, Sam was 2.1 km ahead. Sam completed the race at 10.20 a.m. What time did Natalie complete the race?
3 m

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Sam and Natalie were in a roller skating race. Sam was travelling at a constant speed of 21 km/h and they both did not change their speed. When Natalie completed half of her race, Sam was 2.1 km ahead. Sam completed the race at 10.20 a.m. What time did Natalie complete the race?