Question

Solve each proportion.use cross multiplication to find missing values2/5 = 8/x

Answer 1

$\frac{2}{5}=\frac{8}{x}$

apply cross multiplication

$2\cdot x=8\cdot5$

simplify

$2x=40$

solve for x

$\begin{gathered} x=\frac{40}{2} \\ x=20 \end{gathered}$