Activity

Immediate Predecessor$($s$)$

Duration $($Weeks$)$

Activity

Duration

Immediate Predecessor$($s$)$

$($Weeks$)$

$6$

A

$4$

F

B

C

B

$10$

$7$

G

$2$

C

H

F

$8$

D

A

$5$

F$,$ G

$11$

E

B

$3$

J

D$,$ E

$8$

a$)$ Draw a network diagram and find the critical path and project completion time.

b$)$ Calculate float$/$ slack of the all activities.

c$)$ If $$1000$ can be saved for each delayed day of activity H$,$ then how much dollar can be saved keeping the project completion time unchanged?

d$)$ Activity G needs a delayed time of two weeks and an extra time of five weeks. Is it possible by keeping the project completion time unchanged? Explain.

e$)$ The PM wants to shorten the duration of the activity I from $11$ weeks to $9$ weeks. What is the impact of this change on project completion time?