schedule?

ABLE $7\mathrm{.}6|$ DATABASE DESIGN PROJECT DATA

$\backslash$table$[[$Activity$,\backslash$table$[[$Normal$],[$Time$],[($days$)]],\backslash$table$[[$Normal$],[$Cost $($$$)],[$A$]],\backslash$table$[[$Crash$],[$Time$],[($days$)]],\backslash$table$[[$Crash$],[$Cost $($$$)]],\backslash$table$[[$Immedlate$],[$Predecessor$($s$)]]],[$B$,4,800,2,2,000,-],[$C$,3,600,2,900,$A$,$ B$],[$D$,2,1,500,1,2,000,$B$],[$E$,6,900,4,1,200,$C$,$ D$],[$F$,2,1,300,1,1,400,$E$],[$G$,4,900,4,900,$E$],[$H$,4,500,2,900,$G$]]$

You are the manager of a project to improve a billing process at your firm. Table $7\mathrm{.}7$ contains the data you will need to conduct a cost analysis of the project. Indirect costs are $$1,600$ per week, and penalty costs are $$1,200$ per week after week $12.$

a$.$ What is the minimum$-$cost schedule for this project?

b$.$ What is the difference in total project costs between the earliest completion time of the project using "normal" times and the minimum$-$cost schedule you derived in part $($a$)?$