The total pressure of a mixture of non-reacting gases $\mathrm{X}(0.6 \mathrm{~g})$ and $\mathrm{Y}(0.45 \mathrm{~g})$ in a vessel is $740 \mathrm{~mm}$ of $\mathrm{Hg}$.

The partial pressure of the gas $\mathrm{X}$ is _______ $\mathrm{mm}$ of $\mathrm{Hg}$. (Nearest Integer)

(Given : molar mass $\mathrm{X}=20$ and $\mathrm{Y}=45 \mathrm{~g} \mathrm{~mol}^{-1}$)