# Chapter 9 - Roots and Radicals - Chapters 1-9 Cumulative Review Problem Set - Page 432: 27

$25$ %

#### Work Step by Step

We need to divide 18 by 72 and multiply the resulting expression by 100 in order to find the percentage of 72 represented by 18: =$\frac{18}{72}\times100$ =$\frac{1}{4}\times100$ =$\frac{100}{4}$ =$25$ %

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