1973 AHSME Problems/Problem 20

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First, you draw a reflection of the cowboy across the river. Then, you draw the straight line from the "cowboy" to his cabin. This will be a $8, 15, 17$ Pythagorean triple, so the answer is $17$, which is $\boxed{C}$.

1973 AHSC (ProblemsAnswer KeyResources)
Preceded by
1972 AHSME
Followed by
1974 AHSME
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