1 is 1.39% of 72.
Step 1: Translate the words into an equation.
1 | is | what percent | of | 72 |
1 | = | x | $ \cdot $ | 72 |
Step 2: Solve for $ x $.
$$ \begin{aligned} 1 &= x \cdot 72 \\[1.2 em] 72 \cdot x &= 1 \\[1.2 em] x &= \dfrac{ 1 }{ 72 } \\[1.2 em] x &= 0.0139 \end{aligned} $$Step 3: Express $ x $ as a percentage.
$$ x = 0.0139 = 0.0139 ~~\cdot~~ 100 \% = 1.39 \% $$