Question

solve for j in the proportion.
$\frac{40}{50}=\frac{j}{5}$
$j = square$

Explanation:

Step1: Cross - multiply

$40\times5 = 50\times j$

Step2: Simplify the left - hand side

$200 = 50j$

Step3: Solve for $j$

$j=\frac{200}{50}$
$j = 4$

Answer:

$4$