Mathematics, 12.03.2020 12:43, arthurdolz

. Fast train gets from the starting to the final station in 4 hours and 20 minutes. The slower local train, whose average speed is 30 km/h lower, is able to make the same journey in 7 hours and 40 minutes. What is the speed of the fast train and what is the speed of the local train ?

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. Fast train gets from the starting to the final station in 4 hours and 20 minutes. The slower local...