Ouestion $2$:

Construct the $($AOA$)$ and $($AON$)$ networks for the project whose activities their duration and their precedence relationships are as given in the table below, find out the critical path and completion time.

$\backslash$table$[[$Activity$,$Precedence,Duration$],[$A$,-,2],[$B$,$A$,8],[$C$,$A$,10],[$D$,$B$,6],[$E$,$B$,3],[$F$,$C$,3],[$G$,$C$,7],[$H$,$D$,$F$,5],[$I$,$E$,2],[$J$,$G$,8]]$