the critical path should also be determined. Here are the activity times.

$\backslash$table$[[,,,,,],[$Activity$,$Time $($weeks$)$ Immediate Predecessor$($s$),$Activity,Time $($weeks$)$ Immediate Predecessor$($s$),,],[$A$,6,-,$E$,4,$B$],[$B$,8,-,$F$,7,$B$],[$C$,4,$A$,$G$,10,$C$,$ E$],[$D$,1,$A$,$H$,6,$D$,$ F$]]$

Dave's earliest start $($ES$)$ and earliest finish $($EF$)$ are:

$\backslash$table$[[$Activity$,$ES$,$EF$],[$A$,,6]]$