The activities to complete a project are listed below.

a$)$ What is the project duration?

b$)$ If you were asked to complete the project in $12$ weeks, what activities will you crash and by how much?

c$)$ What is the total crashing cost based on $($b$)?$

$\backslash$table$[[$Activity$,\backslash$table$[[$Activity$],[$time$]],\backslash$table$[[$Crash$],[$time$]],\backslash$table$[[$Activity$],[$Cost$]],\backslash$table$[[$Crash$],[$Cost$]],$Predecessor $1,$Predecessor $2],[$A$,4,3,2000,2600,,],[$B$,2,1,2200,2800,,],[$C$,3,3,500,500,,],[$D$,8,4,2300,2600,$B$,],[$E$,6,3,900,1200,$A$,$D$],[$F$,3,2,3000,4200,$C$,],[$G$,4,2,1400,2000,$E$,$F$]]$