Dave Fletcher was able to determine the activity times for constructing his laser scanning machine. Fletcher would like to determine$$ES$,$ EF$,$LS$,$ LF$,$ and slack for each activity. The total project completion time and the critical path should also be determined. Here are the activity$$times:

Activity

Time $($weeks$)$

Immediate Predecessor$($s$)$

A

$6$

$-$

B

$8$

$-$

C

$4$

A

D

$2$

A

Activity

Time $($weeks$)$

Immediate Predecessor$($s$)$

E

$4$

B

F

$5$

B

G

$10$

C$,$ E

H

$8$

D $,$ F

$$Dave$\text{'}$s earliest start$($ES$)$ and earliest finish$($EF$)$ are:

$$Dave$\text{'}$s latest start$($LS$)$ and latest finish$($LF$)$ are:

The slack times$$are:$\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_$

The activities on the critical path are$\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_$

The total project completion time for Dave$=\_\_\_\_\_\_\_$ weeks