kalissavlach kalissavlach

23-03-2016
Mathematics

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A boat goes 4 miles upstream in four hours. It returns downstream to the starting point in two hours .The rate of the boat is X. The rate of the river current is Y . Find X &Y miles per hour

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kelpel197 kelpel197

23-03-2016

The boat(x) goes 1mi/hr because 4 mi and 4hr divide each by four. The rate of the river current S twice that because the time is halved so y=8mi/hr

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