Mathematics, 04.04.2021 06:00 21briannamtimms

A man can row at 9km/h in still water. He rows 1.5km upstream and back again. The stream flows at 3km/h. What is his average speed for the whole trip?

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A man can row at 9km/h in still water. He rows 1.5km upstream and back again. The stream flows at 3k...

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