Question
Salik started travelling at 10 a.m. at a speed of 70 km/h towards a town. Matthew started travelling towards the town from the same place 4 hours later. When Salik reached the town at 7 p.m., Matthew had another 180 km to travel. What was Matthew's average speed?
3 m

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Salik started travelling at 10 a.m. at a speed of 70 km/h towards a town. Matthew started travelling towards the town from the same place 4 hours later. When Salik reached the town at 7 p.m., Matthew had another 180 km to travel. What was Matthew's average speed?