Question
Robert started travelling at 7 a.m. at a speed of 61 km/h towards a town. Abigail started travelling towards the town from the same place 5 hours later. When Robert reached the town at 5 p.m., Abigail had another 180 km to travel. What was Abigail's average speed?
3 m

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Robert started travelling at 7 a.m. at a speed of 61 km/h towards a town. Abigail started travelling towards the town from the same place 5 hours later. When Robert reached the town at 5 p.m., Abigail had another 180 km to travel. What was Abigail's average speed?