A solution at $20^{\circ}C$ is composed of $1.5\;mol$ of benzene and $3.5\; mol$ of toluene. If the vapour pressure of pure benzene and pure toluene at this temperature are $74.7$ torr and $22.3$ torr, respectively, then the total vapour pressure of the solution and the benzene mole fraction in equilibrium with it will be, respectively :

Question

$\begin{array}{1 1} 35.0\; torr\; and \;0.480 \\ 38.0\; torr\; and\; 0.589 \\ 30.5\; torr\; and\; 0.389 \\ 35.8\; torr\; and\; 0.280 \end{array}$