Question
Ian and Sarah were in a roller skating race. Ian was travelling at a constant speed of 23 km/h and they both did not change their speed. When Sarah completed half of her race, Ian was 2.3 km ahead. Ian completed the race at 11.30 a.m. What time did Sarah complete the race?
3 m

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Ian and Sarah were in a roller skating race. Ian was travelling at a constant speed of 23 km/h and they both did not change their speed. When Sarah completed half of her race, Ian was 2.3 km ahead. Ian completed the race at 11.30 a.m. What time did Sarah complete the race?