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# Answer to Question #84169 in Algebra for Pamela Kelsey

Question #84169
You need to replace 3/4 mile of fence. You do not need to add the first corner pole. If you put a pole in every 1/12 of a mile, how many poles do you need? Please show your work.

The target number N of poles is defined by the ratio of the total length of the fence to be replaced to the pole gap:

$N=\frac{3}{4}:\frac{1}{12}=\frac{3\cdot12}{4\cdot1}=9.$

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