Question
Evelyn started travelling at 11 a.m. at a speed of 64 km/h towards a town. Mason started travelling towards the town from the same place 4 hours later. When Evelyn reached the town at 7 p.m., Mason had another 180 km to travel. What was Mason's average speed?
3 m

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Evelyn started travelling at 11 a.m. at a speed of 64 km/h towards a town. Mason started travelling towards the town from the same place 4 hours later. When Evelyn reached the town at 7 p.m., Mason had another 180 km to travel. What was Mason's average speed?