Answer
It takes $125\,\mathrm{min}$ for the fluid to run out.
Work Step by Step
Conversion - $1\,\mathrm{cc}=1\,\mathrm{mL}$
Time taken for the fluid to run out,
\begin{align*}
t&=\frac{V}{r}=\frac{500}{4}\\&=125\,\mathrm{min}
\end{align*}
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