Answer
67.5 ft
Work Step by Step
Write a proportion.
$\frac{actual\ fly}{actual\ wingspan}=\frac{model\ fly}{model\ wingspan}\longrightarrow$ substitute given values
$\frac{0.2}{0.5}=\frac{27}{w}\longrightarrow$ cross multiply
$0.2w=(0.5)(27)\longrightarrow$ multiply
$0.2w=13.5\longrightarrow$ divide both sides by 0.2
$0.2w\div0.2=13.5\div0.2\longrightarrow$ divide
$w=67.5$
