0.04 is 0.39% of 10.25.
Step 1: Translate the words into an equation.
0.04 | is | what percent | of | 10.25 |
0.04 | = | x | $ \cdot $ | 10.25 |
Step 2: Solve for $ x $.
$$ \begin{aligned} 0.04 &= x \cdot 10.25 \\[1.2 em] 10.25 \cdot x &= 0.04 \\[1.2 em] x &= \dfrac{ 0.04 }{ 10.25 } \\[1.2 em] x &= 0.0039 \end{aligned} $$Step 3: Express $ x $ as a percentage.
$$ x = 0.0039 = 0.0039 ~~\cdot~~ 100 \% = 0.39 \% $$