Mathematics, 17.03.2021 23:50 Selvey35

two trains on opposite tracks leave the same station at the same time. One train travels at an average speed of 80 kilometres per hour and the pther travels at an average speed of 70 kilometres per hour. How long after they leave the station will they be 50 km apart?

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two trains on opposite tracks leave the same station at the same time. One train travels at an avera...