Question
Riordan started travelling at 6 a.m. at a speed of 69 km/h towards a town. Julie started travelling towards the town from the same place 2 hours later. When Riordan reached the town at 3 p.m., Julie had another 180 km to travel. What was Julie's average speed?
3 m

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Riordan started travelling at 6 a.m. at a speed of 69 km/h towards a town. Julie started travelling towards the town from the same place 2 hours later. When Riordan reached the town at 3 p.m., Julie had another 180 km to travel. What was Julie's average speed?