Question:-
In the network shown below the critical path is along:

Option (A)
1-2-3-4-8-9
Option (B)
1-2-3-5-6-7-8-9
Option(C)
1-2-3-4-7-8-9
Option(D)
1-2-5-6-7-8-9
Correct Option:
(B)
Question Solution:
Activities Duration EST LST EFT LFT Total Fload Remark
1-2 3 0 0 3 0
2-3 4 3 3 7 0
3-4 5 7 10 15 3
2-5 2 3 5 7 2
4-8 5 12 15 20 3
5-6 3 7 7 10 0
6-7 4 10 10 14 0
7-8 6 14 14 20 0
8-9 4 20 20 24 0
4-7 0 12 14 14 2
3-5 0 7 7 7 0
Therefore critical path
1 – 2 – 3 – 4 – 5 – 6 – 7 – 8 – 9
And total project duration
= 3 + 4 + 3 + 4 + 6 + 4 = 24
question-answer-faq-3328