Question
A grey bus left Town P for Town Q at the same time when a blue bus left Town Q to Town P. The average speed of the grey bus and the blue bus were 71 km/h and 85 km/h respectively. The two buses passed each other at a point 35 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 P for Town Q at the same time when a blue bus left Town Q to Town P. The average speed of the grey bus and the blue bus were 71 km/h and 85 km/h respectively. The two buses passed each other at a point 35 km from the midway of the two towns. How far apart are these two towns?