Mathematics, 08.10.2021 05:30, LilFreaky666

A passenger train left the station and traveled west at an average speed of 20 km/h. Sometime later a freight train left traveling in the opposite direction with an average speed of 55 km/h. After the passenger train had traveled for 13 hours the trains were 975 km apart. How long did the freight train travel?

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A passenger train left the station and traveled west at an average speed of 20 km/h. Sometime later...