Question
Bryan started travelling at 5 a.m. at a speed of 85 km/h towards a town. Samuel started travelling towards the town from the same place 2 hours later. When Bryan reached the town at 5 p.m., Samuel had another 180 km to travel. What was Samuel's average speed?
3 m

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Bryan started travelling at 5 a.m. at a speed of 85 km/h towards a town. Samuel started travelling towards the town from the same place 2 hours later. When Bryan reached the town at 5 p.m., Samuel had another 180 km to travel. What was Samuel's average speed?