Question
A purple bus left Town C for Town D at the same time when a white bus left Town D to Town C. The average speed of the purple bus and the white bus were 69 km/h and 73 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 purple bus left Town C for Town D at the same time when a white bus left Town D to Town C. The average speed of the purple bus and the white bus were 69 km/h and 73 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?