50 is 333.33% of 15.
Step 1: Translate the words into an equation.
50 | is | what percent | of | 15 |
50 | = | x | $ \cdot $ | 15 |
Step 2: Solve for $ x $.
$$ \begin{aligned} 50 &= x \cdot 15 \\[1.2 em] 15 \cdot x &= 50 \\[1.2 em] x &= \dfrac{ 50 }{ 15 } \\[1.2 em] x &= 3.3333 \end{aligned} $$Step 3: Express $ x $ as a percentage.
$$ x = 3.3333 = 3.3333 ~~\cdot~~ 100 \% = 333.33 \% $$