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Mathematics, 11.12.2019 20:31, cvannesacanto
a fisherman traveled in a boat from point n upstream. after having traveled 6 km, he stopped rowing and 2 hour 40 min after first leaving n, he was brought back to n by the current. knowing that the speed of the boat in still water is 9 km/hour, find the speed of the river’s current.
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a fisherman traveled in a boat from point n upstream. after having traveled 6 km, he stopped rowing...
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