Question
A blue bus left Town W for Town X at the same time when a silver bus left Town X to Town W. The average speed of the blue bus and the silver bus were 70 km/h and 90 km/h respectively. The two buses passed each other at a point 20 km from the midway of the two towns. How far apart are these two towns?
3 m

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A blue bus left Town W for Town X at the same time when a silver bus left Town X to Town W. The average speed of the blue bus and the silver bus were 70 km/h and 90 km/h respectively. The two buses passed each other at a point 20 km from the midway of the two towns. How far apart are these two towns?