Answer:
25%
Explanation:
Let the percentage = x%
[tex]x\%\text{ of }0.72=0.18[/tex]We then solve for x:
[tex]\begin{gathered} \frac{x}{100}\times0.72=0.18 \\ 0.72x=0.18\times100 \\ 0.72x=18 \\ x=\frac{18}{0.72} \\ x=25 \end{gathered}[/tex]Therefore, 25% of $0.72 is $0.18.