Question
Albert and Esther were in a roller skating race. Albert was travelling at a constant speed of 21 km/h and they both did not change their speed. When Esther completed half of her race, Albert was 2.1 km ahead. Albert completed the race at 10.30 a.m. What time did Esther complete the race?
3 m

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Albert and Esther were in a roller skating race. Albert was travelling at a constant speed of 21 km/h and they both did not change their speed. When Esther completed half of her race, Albert was 2.1 km ahead. Albert completed the race at 10.30 a.m. What time did Esther complete the race?