a. Draw the CPM Path using the previous tasks precedence and time b. What is the

Question

a. Draw the CPM Path using the previous tasks precedence and time

b. What is the critical path of this network?

c. What is the length of the critical path?

d. What is slack time at activity H?

e. What is the Late Finish of activity H?

f. If activity C were delayed by two time units, what would happen to the project duration?

Start a. Draw the CPM Path using the previous tasks precedence andtime b. What is the critical path ofthis network? c. What is the length of the critical path? d. What is slack time at activity H

Explanation / Answer

Activity durations are A=5, B=2, C=12, D=3, E=5, F=1, G=7, H=2, I=10, and J=6.

b) Critical path of network:

A - B - E - H - J = 5 + 2 + 5 + 2 + 6 = 20

A - B - G - I - J = 5 + 2 + 7 + 10 + 6 = 30

A - C - H - J = 5 + 12 + 2 + 6 = 25

D - F - I - J = 3 + 1 + 10 + 6 = 20

Here, critical path is  A - B - G - I - J

c) the length of the critical path is 30 .

d) slack time of activity H : Slack Time = LS - ES ( LS : late start , ES : Early start)

= (12+ 5 + 5) - ( 12 + 5) = 5

e) Late Finish of activity H : ( 12+ 5 +2 ) = 19

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