Mathematics, 28.01.2021 04:20 aeriyonna58

a boat is going 144 miles upstream on a river. the speed of the boat in still water is 60 miles per hour. the speed of the river current is 80% less than the speed of the boat in still water. how long does the journey take?

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a boat is going 144 miles upstream on a river. the speed of the boat in still water is 60 miles per...