## Algebra 1

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 $w=67.5$