[tex]\bf \begin{array}{cclll}
amount&hours\\
\textendash\textendash\textendash\textendash\textendash\textendash&\textendash\textendash\textendash\textendash\textendash\textendash\\
187.50&12.5\\
465&x
\end{array}\implies \cfrac{187.50}{465}=\cfrac{12.5}{x}[/tex]
solve for "x"