
Q. The activities of a project, their duration and the precedence relationships are given in the table. For example, in a precedence relationship “X Activity Duration (Weeks) Precedence Relationship A 5 A B 7 B C 10 C D 6 D E 3 E F 9 F G 7 G H 4 H I 2 —-
(A) 17 (B) 21
(C) 23 (D) 25
Ans: 23
Sol:

So critical path is A – B – F – I
Critical path duration = 23 weeks