Please use microsoft excel to complete, thank you! I will thumbs up$!$

Benzene, styrene, toluene, and xylene are to be separated with the array of distillation columns shown in Figure below. Experimental data show that the feed rate $($stream A$)$ is $300k\frac{g}{h}r$ and that the composition of stream A is $15\%$ benzene, $20\%$ styrene, $30\%$ toluene and $35\%$ xylene $($compositions are in weight $\%).$ Determine the flow rates of D$,$ E$,$ F and G with a$)$ Excel matrix functions and b$)$ Gauss$-$Jordan elimination method. The following information is available for this system: $1.85\%$ benzene, $60\%$ styrene, $25\%$ toluene and $10\%$ xylene of the feed stream go overhead to stream B$.$ The remainder goes out the bottom to stream C$.$

$2.70\%$ benzene, $60\%$ styrene, $25\%$ toluene and $5\%$ xylene of stream B go overhead to stream D$.$ The remainder goes out the bottom to stream $E.$

$3.85\%$ benzene, $65\%$ styrene, $20\%$ toluene and $10\%$ xylene of stream C go overhead to stream The remainder goes out the bottom to stream $G.$