Question
A grey bus left Town R for Town S at the same time when a blue bus left Town S to Town R. The average speed of the grey bus and the blue bus were 80 km/h and 84 km/h respectively. The two buses passed each other at a point 18 km from the midway of the two towns. How far apart are these two towns?
3 m

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A grey bus left Town R for Town S at the same time when a blue bus left Town S to Town R. The average speed of the grey bus and the blue bus were 80 km/h and 84 km/h respectively. The two buses passed each other at a point 18 km from the midway of the two towns. How far apart are these two towns?