A two-phase $(\alpha+\beta)$ mixture of an $\text{A-B}$ binary system has the following properties:
- Phase $\alpha$ has equal weight percentages of $\mathrm{A}$ and $\mathrm{B}$.
- Phase $\beta$ has twice the mole fraction of $\mathrm{A}$ compared to $\mathrm{B}$.
- The two-phase mixture has equal amounts of $\alpha$ and $\beta$.
- Atomic mass of $\mathrm{A}$ is twice that of $\mathrm{B}$.
The mole fraction of $\mathrm{A}$ in the resultant two-phase mixture is
$\text{(Round off to one decimal)}$
