Mathematics, 19.09.2021 14:00 marie2061

Ryan and Mary are both travelling by train. Ryan's train travels 80 km in 50 minutes.
Mary's train travels 270 km.
It leaves at 13:10 and arrives at 15:25.
Work out the difference, in km/h, between the average speed of their trains.

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Ryan and Mary are both travelling by train. Ryan's train travels 80 km in 50 minutes.
Mary's...