#### Answer

Ratio of blue whale’s length to great white shark’s length = $\frac{4}{1}$

#### Work Step by Step

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)
= $\frac{80\div20}{20\div20}$
= $\frac{4}{1}$