Please help with the following problem:

Q$4)$ A multicomponent mixture containing $27\%$ benzene, $48\%$ cumene and $25\%$

di$-$isopropyl benzene is fed to the plate column at a rate of $850$kmo$\frac{l}{h}.$ The light and

heavy key recoveries are $96\%$ and $99\%.$ The details of the relative volatilities are given

in the table below. If $q=1,$ pressure of the operation takes place at $2$ atm and $60C,$

calculate:

a$)$ The component distribution for each stream $($feed$,$ top and bottom products$)$

b$)$ Calculate the minimum reflux ratio