Solve example $4-4$ with Lo$/$D$=1\mathrm{.}5$ instead of $3\mathrm{.}0$ by hand with McCabe $-$ Thiele analysis. In addition to calculating the optimum feed plate location and the total number of equilibrium stages, also calculate Qc$,$ D$,$ B$,$ and the stream rate S$.$

Please let ke ijiw if there are more conditions that i need to get a hand written soulyion of a Mccabe$-$Thiele method graph.