P$11-4$ Draw CPM diagram and determine critical path A project consists of the following activities.

$\backslash$table$[[$Activity$,$Duration $($days$)],[$A$,6],[$B$,5],[$C$,3],[$D$,2],[$E$,4],[$F$,6],[$G$,10],[$H$,7]]$

A and B can be commenced concurrently. Both C and D can be commenced after completion of $A.$ Both $E$ and $F$ can be commenced after completion of $B.$ G cannot commence until $C$ and $E$ have been completed. $H$ follows completion of $D$ and $F.$

Required:

$($a$)$ Draw the network diagram.

$($b$)$ List the paths in the network and identify the critical path.

$($c$)$ What is the total project completion time?