Project Scheduling using normal and crash time

OUESTION FOUR: $(5$ marks$)$

Consider a project consisting of eight jobs $($A$,$ B$,$ C$,$ D$,$ E$,$ F$,$ G$,$ and H$).$ About each job, we know the following:

$\backslash$table$[[$Activity$,\backslash$table$[[$Immediate$],[$predecessor $($s$)]],$Time $($days$),$Total Cost $($$$)],[$Normal$,$Crash,Normal,Crash,$],[$A$,-,10,7,100,220],[$B$,-,5,4,500,520],[$C$,$B$,3,2,400,420],[$D$,$A$,$ C$,4,3,600,630],[$E$,$A$,$ C$,5,3,700,760],[$F$,$D$,6,3,200,350],[$G$,$E$,5,2,100,130],[$H$,$F$,$ G$,5,4,150,190]]$Project Scheduling using normal and crash time

OUESTION FOUR: $(5$ marks$)$

Consider a project consisting of eight jobs $($A$,$ B$,$ C$,$ D$,$ E$,$ F$,$ G$,$ and H$).$ About each job, we know the following:

$\backslash$table$[[$Activity$,\backslash$table$[[$Immediate$],[$predecessor $($s$)]],$Time $($days$),$Total Cost $($$$)],[$Normal$,$Crash,Normal,Crash,$],[$A$,-,10,7,100,220],[$B$,-,5,4,500,520],[$C$,$B$,3,2,400,420],[$D$,$A$,$ C$,4,3,600,630],[$E$,$A$,$ C$,5,3,700,760],[$F$,$D$,6,3,200,350],[$G$,$E$,5,2,100,130],[$H$,$F$,$ G$,5,4,150,190]]$ ggii eenn tthhee oovveerrhheeaadd ccoosstt aass $50$ ppeerr ddaayy,, ddeetteerrmmiinnee tthhee iippttiimmaall dduurraattiioonn ooff tthhee pprroojjeecctt wwiitthh ooppttiimm