Question
Simon and Shannon were in a roller skating race. Simon was travelling at a constant speed of 21 km/h and they both did not change their speed. When Shannon completed half of her race, Simon was 2.1 km ahead. Simon completed the race at 9.20 a.m. What time did Shannon complete the race?
3 m

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Simon and Shannon were in a roller skating race. Simon was travelling at a constant speed of 21 km/h and they both did not change their speed. When Shannon completed half of her race, Simon was 2.1 km ahead. Simon completed the race at 9.20 a.m. What time did Shannon complete the race?