## Basic College Mathematics (10th Edition)

$\frac{418}{unknown} = \frac{16}{100}$ Part = 418 Whole= unknown Percent = 16
$\frac{Part}{Whole} = \frac{Percent}{100}$ Now, 418 curtains is 16% of what number of curtains? i.e. $\frac{418}{unknown} = \frac{16}{100}$