Question
Risa started travelling at 11 a.m. at a speed of 84 km/h towards a town. Josiah started travelling towards the town from the same place 2 hours later. When Risa reached the town at 4 p.m., Josiah had another 180 km to travel. What was Josiah's average speed?
3 m

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Risa started travelling at 11 a.m. at a speed of 84 km/h towards a town. Josiah started travelling towards the town from the same place 2 hours later. When Risa reached the town at 4 p.m., Josiah had another 180 km to travel. What was Josiah's average speed?