Question
Archie and Penelope were in a roller skating race. Archie was travelling at a constant speed of 21 km/h and they both did not change their speed. When Penelope completed half of her race, Archie was 2.1 km ahead. Archie completed the race at 11.50 a.m. What time did Penelope complete the race?
3 m

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Archie and Penelope were in a roller skating race. Archie was travelling at a constant speed of 21 km/h and they both did not change their speed. When Penelope completed half of her race, Archie was 2.1 km ahead. Archie completed the race at 11.50 a.m. What time did Penelope complete the race?