You are the project manager working for Mack's Pool Co$.$ Your project consists of installing a new swimming pool at the local country club before Memorial Day weekend $($pool opening weekend$).$ You would like to find the minimum cost schedule for your project. There is a $$9,000$ per week penalty for each week the project is delayed beyond week $9.$ In addition, your project team determined that indirect costs are $$15,000$ per week.

$\backslash$table$[[$ACTIVITY$,\backslash$table$[[$Immediate$],[$Predecessor$],[($s$)]],\backslash$table$[[$NORMAL$],[$TIME $($NT$)]],\backslash$table$[[$CRASH$],[$TIME $($CT$)]],\backslash$table$[[$Normal$],[$Cost $($NC$)]],\backslash$table$[[$Crash$],[$Cost $($CC$)]]],[$A$,--,2,1,7,000,10,000],[$B$,--,2,2,3,000,3,000],[$C$,$A$,3,1,12,000,40,000],[$D$,$B$,3,2,12,000,28,000],[$E$,$C$,1,1,8,000,8,000],[$F$,$D$,$ E$,5,3,5,000,15,000],[$G$,$E$,3,2,9,000,18,000]]$

Before crashing, the project duration is week$($s$).$