## Prealgebra (7th Edition)

$\frac{11}{15}$ is not the same as the ratio $\frac{15}{11}$
$\frac{11}{15}$ means that for every 11 of one thing, there is 15 of another thing. $\frac{15}{11}$ means that for every 15 of one thing, there is 11 of another thing. The first statement and the second statement are not equivalent in meaning.