Problem In still water, your small boat averages 8 miles per hour. It takes you the same amount of time to travel 15 miles downstream, with the current, as 9 miles upstream, against the current. What is the rate of water's current?
Answer Key
Solution
$\dfrac{15}{8 + y} = \dfrac{9}{8 - y}$
$y = 2 \text{ mph}$ ← answer
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