## Basic College Mathematics (10th Edition)

$\frac{1}{2}=\frac{p}{100}$ We can take the cross products to solve for p. $1\times100=2\times p$ $100=2p$ Divide both sides by 2. $\frac{100}{2}=\frac{2p}{2}$ $p=50$ Therefore, $\frac{1}{2}=\frac{50}{100}$=50%.