SOLUTION: Rewrite in two unknowns. Let x and y represent the tow unknown quantities. Define what x and y are. Chuck paddles his canoe 27 km downstream for 3 hours.

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Question 179762: Rewrite in two unknowns. Let x and y represent the tow unknown quantities. Define what x and y are.
Chuck paddles his canoe 27 km downstream for 3 hours.
Answer by solver91311(24713) (Show Source):
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Let x be the rate of speed of the boat in still water.

Let y be the rate of speed of current in the stream.

Using the standard relationship between distance, rate, and time ( which is equivalent to ). the fact that the rate of speed of the boat relative to the shoreline is the sum of the rate of the boat in still water and the rate of the current (contrast with going upstream where the rate relative to the shore would be the difference between still water speed and the current), and the given values, we can write:

John