A binary mixture of benzene and toluene under vapour-liquid equilibrium at $80^{\circ} \mathrm{C}$ follows ideal Raoult's law. At this condition, the saturation pressures of benzene and toluene are $101 \: \mathrm{kPa}$ and $40 \: \mathrm{kPa}$ , respectively. If the mole fraction of benzene in the liquid phase is $0.6$, the corresponding mole fraction of benzene in the vapour phase will be $\_\_\_\_\_\_$
(Round off to two decimal places).
