I dont know what formulas or inputs to use in the excel cells to work the solver. Please help specifically with the excel file. Thank you! The graph above represents various flows that can occur through a sewage treatment plant with

the numbers on the arcs representing the maximum flow $($in tons of sewage per hour$)$ that can be

accommodated.

$($a$)$ Formulate an LP model to determine the maximum tons of sewage per hour that can be

processed by this plant. $(30$ points$)$

$($b$)$ Implement your model in Excel and solve it$.(50$ points$)$

$($c$)$ What is the optimal solution? $(20$ points$)$