## Basic College Mathematics (9th Edition)

In order to write the fraction $\frac{3}{8}$ as a percent, we can set $\frac{3}{8}=\frac{p}{100}$ and solve for p (where $\frac{p}{100}=p$%). We can solve by using cross products. $3\times100=8\times p$ $300=8p$ Divide both sides by 8. $p=37.5$ Therefore, $\frac{3}{8}=\frac{37.5}{100}$=37.5%.