Question
Michael started travelling at 7 a.m. at a speed of 72 km/h towards a town. Evan started travelling towards the town from the same place 4 hours later. When Michael reached the town at 5 p.m., Evan had another 180 km to travel. What was Evan's average speed?
3 m

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Michael started travelling at 7 a.m. at a speed of 72 km/h towards a town. Evan started travelling towards the town from the same place 4 hours later. When Michael reached the town at 5 p.m., Evan had another 180 km to travel. What was Evan's average speed?