Question $17(6$ points$)$

The following information is known about a project to upgrade a point$-$of$-$sale system at the UNG bookstore:

$\backslash$table$[[$Activity Activity Time $($days$),$Immediate Predecessor$($s$),],[$A$,7,-],[$B$,2,$A$],[$C$,5,$A$],[$D$,3,$B$,$ C$],[$E$,5,$D$],[$F$,3,$E$],[$G$,8,$E$]]$

a$.$ Determine the critical path and project duration.

b$.$ Calculate the slack $($in days$)$ for each activity.

$\backslash$table$[[$Activity$,$Slack $($days$)],[$A$,],[$B$,],[$C$,],[$D$,],[$E$,],[$F$,],[$G$,]]$