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$)$

Activity

Time$($weeks$)$

Immediate$$ Predecessor$($s$)$

A

$6$

minus

E

$4$

B

B

$7$

minus

F

$6$

B

C

$3$

A

G

$11$

$$C$,$ E

D

$2$

A

H

$6$

D$,$ F

Part $2$

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

Part $3$Part $4$

Activity

ES

EF

A

$$

$0$

$6$

B

$0$

$$

$7$

C

$$

enter your response here

$9$