Question
Claire started travelling at 8 a.m. at a speed of 75 km/h towards a town. Ella started travelling towards the town from the same place 2 hours later. When Claire reached the town at 4 p.m., Ella had another 180 km to travel. What was Ella's average speed?
3 m

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Claire started travelling at 8 a.m. at a speed of 75 km/h towards a town. Ella started travelling towards the town from the same place 2 hours later. When Claire reached the town at 4 p.m., Ella had another 180 km to travel. What was Ella's average speed?