Please help. Consider that the Methanol $-$ Water distillation tower is at $200\mathrm{.}0$kPa. Use the modified Raoult's Law $($and

use the Margules Equation to calculate the activity coefficients$)-$ estimate the BUBPT temperature and the

DEWPT temperature for a $\frac{50}{50}$ feed composition $($z$1=0\mathrm{.}5).$

$A_{12}=0\mathrm{.}69,A_{21}=0\mathrm{.}51$