37.5 is 250% of 15.
Step 1: Translate the words into an equation.
37.5 | is | what percent | of | 15 |
37.5 | = | x | $ \cdot $ | 15 |
Step 2: Solve for $ x $.
$$ \begin{aligned} 37.5 &= x \cdot 15 \\[1.2 em] 15 \cdot x &= 37.5 \\[1.2 em] x &= \dfrac{ 37.5 }{ 15 } \\[1.2 em] x &= 2.5 \end{aligned} $$Step 3: Express $ x $ as a percentage.
$$ x = 2.5 = 2.5 ~~\cdot~~ 100 \% = 250 \% $$