Draw an activity on node network diagram and perform forward and backward pass calculations.

$\backslash$table$[[$Activity$,$Predecessor,Duration$],[$A$,-,2],[$B$,$A$,5],[$C$,$A$,9],[$D$,$A$,3],[$E$,$B$,6],[$F$,$B$,$ C$,4],[$G$,$C$,$ D$,2],[$H$,$E$,$ F$,4],[$I$,$G$,$ H$,2]]$

Considering the following table, add lag durations to the AON created in Question $2.$ Then, perform forward and backward pass calculations.

$\backslash$table$[[$Activity$,$Predecessor,Duration,Lag$],[$A$,-,2,],[$B$,$A$,5,],[$C$,$A$,9,],[$D$,$A$,3,4],[$E$,$B$,6,],[$F$,$B$,$ C$,4,3($btw B & F$)],[$G$,$C$,$ D$,2,],[$H$,$E$,$ F$,4,],[$I$,$G$,$ H$,2,1($btw I & H$)],[,$G$,,]]$