It is desired to distill $800$ mol$/$h of a mixture of benzene $(54\%$ mol$)$ and toluene that are fed as a saturated liquid to a distillation column operating at $1\mathrm{.}0$ atm.

The distillate and residue must contain $96$ and $12$ mol $\%$ benzene, respectively, and the operating reflux ratio is $3\mathrm{.}058$ times the minimum reflux.

Use the following graph.