Question: A river has a 4k(m)/(h)r current. If a rower can travel 28 kilometers downstream in the river in the same time that it takes to

A river has a 4k(m)/(h)r current. If a rower can travel 28 kilometers downstream in the river in the same time that it takes to go 12 kilometers upstream, what is the rate of the rower in still water? Let the rate of the rower in still water be R .

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