Question
Justin and Esther were in a roller skating race. Justin was travelling at a constant speed of 20 km/h and they both did not change their speed. When Esther completed half of her race, Justin was 2.5 km ahead. Justin completed the race at 10.30 a.m. What time did Esther complete the race?
3 m

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Justin and Esther were in a roller skating race. Justin was travelling at a constant speed of 20 km/h and they both did not change their speed. When Esther completed half of her race, Justin was 2.5 km ahead. Justin completed the race at 10.30 a.m. What time did Esther complete the race?