Question
Harry and Diana were in a roller skating race. Harry was travelling at a constant speed of 20 km/h and they both did not change their speed. When Diana completed half of her race, Harry was 3.5 km ahead. Harry completed the race at 11.55 a.m. What time did Diana complete the race?
3 m

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Harry and Diana were in a roller skating race. Harry was travelling at a constant speed of 20 km/h and they both did not change their speed. When Diana completed half of her race, Harry was 3.5 km ahead. Harry completed the race at 11.55 a.m. What time did Diana complete the race?