Question
Samantha started travelling at 7 a.m. at a speed of 65 km/h towards a town. Rebecca started travelling towards the town from the same place 3 hours later. When Samantha reached the town at 3 p.m., Rebecca had another 180 km to travel. What was Rebecca's average speed?
3 m

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Samantha started travelling at 7 a.m. at a speed of 65 km/h towards a town. Rebecca started travelling towards the town from the same place 3 hours later. When Samantha reached the town at 3 p.m., Rebecca had another 180 km to travel. What was Rebecca's average speed?