13% of 400 is 52.
Step 1: Translate the words into an equation.
What percentage | of | 400 | is | 52 |
x | $ \cdot $ | 400 | = | 52 |
Step 2: Solve for $ x $.
$$ \begin{aligned} x\cdot 400 &= 52 \\[1.2 em] x &= \dfrac{ 52 }{ 400 } \\[1.2 em] x &= 0.13 \end{aligned} $$Step 3: Express $ x $ as a percentage.
$$ x = 0.13 = 0.13 ~\cdot~ 100 \% = 13 \% $$