$$

should also be determined. Here are the activity times:

$\backslash$begin$\{$tabular$\}\{$ccc$|$ccc$\}$

$\backslash$hline Activity & Time $($weeks$)$ & Immediate Predecessor$($s$)$ & Activity & Time $($weeks$)$ & Immediate Predecessor$($s$)\backslash \backslash$

$\backslash$hline A & $7$ & $-$ & E & $5$ & B $\backslash \backslash$

B & $8$ & $-$ & F & $7$ & B $\backslash \backslash$

C & $4$ & A & G & $9$ & C$,$ E $\backslash \backslash$

D & $2$ & A & H & $8$ & D$,$ F $\backslash \backslash$

$\backslash$hline

$\backslash$end$\{$tabular$\}$

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

$\backslash$begin$\{$tabular$\}\{$ccc$\}$

$\backslash$hline Activity & ES & EF $\backslash \backslash$

$\backslash$hline A & & $7$

$\backslash$end$\{$tabular$\}$