5 is 12.82% of 39.
Step 1: Translate the words into an equation.
5 | is | what percent | of | 39 |
5 | = | x | $ \cdot $ | 39 |
Step 2: Solve for $ x $.
$$ \begin{aligned} 5 &= x \cdot 39 \\[1.2 em] 39 \cdot x &= 5 \\[1.2 em] x &= \dfrac{ 5 }{ 39 } \\[1.2 em] x &= 0.1282 \end{aligned} $$Step 3: Express $ x $ as a percentage.
$$ x = 0.1282 = 0.1282 ~~\cdot~~ 100 \% = 12.82 \% $$