Glycerine of density $1.25 \times 10^3 \mathrm{~kg} \mathrm{~m}^{-3}$ is flowing through the conical section of pipe. The area of crosssection of the pipe at its ends is $10 \mathrm{~cm}^2$ and $5 \mathrm{~cm}^2$ and pressure drop across its length is $3 \mathrm{Nm}^{-2}$. The rate of flow of glycerine through the pipe is $x \times 10^{-5} \mathrm{~m}^3 \mathrm{~s}^{-1}$. The value of $x$ is $\_\_\_\_$ .