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Concept explainers
To determine the speed of kayak in still water
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Answer to Problem 5CYU
The speed of kayak in still water is 6 miles per hour.
Explanation of Solution
Given:
A kayak moves 16 miles downstream in 2 hours and moves 16 miles upstream in 4 hours.
Formula used:
Calculation:
Let,
The speed of kayak in still water be x miles per hour
The speed of stream of water is y miles per hour.
Hence,
The speed of kayak upstream will be
The speed of kayak downstream will be
A kayak moves 16 miles downstream in 2 hours, which means,
And, a kayak moves16 miles upstream in 4 hours, which means,
Let the equation,
Now, add equation (i) and equation (ii),
Conclusion:
Therefore, the speed of kayak in still water is 5 miles per hour.
Chapter 6 Solutions
Algebra 1
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