## Basic College Mathematics (9th Edition)

Ratio of blue whale’s length to great white shark’s length = $\frac{4}{1}$
We need to find the Ratio of blue whale’s length to great white shark’s length. i.e. $\frac{blue whale’s length}{great white shark’s length}$ = $\frac{80 ft}{20 ft}$ = $\frac{80}{20}$ (As units were same in numerator and denominator) = $\frac{80\div20}{20\div20}$ = $\frac{4}{1}$