Question
A gold bus left Town T for Town U at the same time when a blue bus left Town U to Town T. The average speed of the gold bus and the blue bus were 56 km/h and 77 km/h respectively. The two buses passed each other at a point 21 km from the midway of the two towns. How far apart are these two towns?
3 m

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A gold bus left Town T for Town U at the same time when a blue bus left Town U to Town T. The average speed of the gold bus and the blue bus were 56 km/h and 77 km/h respectively. The two buses passed each other at a point 21 km from the midway of the two towns. How far apart are these two towns?