31.25% of 80 is 25.
Step 1: Translate the words into an equation.
What percentage | of | 80 | is | 25 |
x | $ \cdot $ | 80 | = | 25 |
Step 2: Solve for $ x $.
$$ \begin{aligned} x\cdot 80 &= 25 \\[1.2 em] x &= \dfrac{ 25 }{ 80 } \\[1.2 em] x &= 0.3125 \end{aligned} $$Step 3: Express $ x $ as a percentage.
$$ x = 0.3125 = 0.3125 ~\cdot~ 100 \% = 31.25 \% $$