project are listed in the following table:

$\backslash$table$[[$Activity$,\backslash$table$[[$Normal$],[$Time $($weeks$)]],\backslash$table$[[$Crash$],[$Time $($weeks$)]],\backslash$table$[[$Normal$],[$Cost$]],\backslash$table$[[$Total Cost$],[$with$],[$Crashing$]],$Immediate Predecessor$($s$)],[$A$,4,3,$$$2,100,$$$2,700,-],[$B$,2,1,$$$2,200,$$$2,800,-],[$C$,3,3,$$$600,$$$600,-],[$D$,8,4,$$$2,500,$$$2,780,$A$],[$E$,6,3,$$$1,000,$$$1,375,$B$],[$F$,3,2,$$$3,000,$$$4,200,$C$],[$G$,4,2,$$$1,500,$$$2,100,$D$,$ E$]]$

a$)$ Based on the given information regarding the activities for the project, the project length $=16$ weeks.

b$)$ The total cost required for completing this project on normal time $=$$$12900.$

c$)$ For reducing the duration of the project by one week, the activity that should be crashed first is activity $D.$

The cost of the project based on the first activity selected for crashing will increase by $$70.$

d$)$ The maximum weeks by which the project can be reduced by crashing $=,$ weeks.

Total cost of crashing the project to minimum $($or maximum weeks possible$)=$$