100% - 25% = 75%
so, if 18.95 is the 100%, how much is the 75% of that?
[tex]\bf \begin{array}{ccllll}
amount&\%\\
\text{\textemdash\textemdash\textemdash}&\text{\textemdash\textemdash\textemdash}\\
18.95&100\\
x&75
\end{array}\implies \cfrac{18.95}{x}=\cfrac{100}{75}[/tex]
solve for "x".
