How to solve

Memorial Services, Incorporated $($MSI$)$ has three service departments $($IT$,$ Accounting, and HR$)$ and two production departments $($West and East$).$ The usage data for each of the service departments for the previous period follow:

$\backslash$table$[[,$IT$,$Accounting,HR$,$West,East$],[$IT$,--,0\%,20\%,40\%,40\%$