Question

For a particular project, eight activities are to be carried out. Their relationships with other activities and expected durations are mentioned in the table below.

Activity	Predecessors	Duration (days)
a	-	3
b	a	4
c	a	5
d	a	4
e	b	2
f	d	9
g	c, e	6
h	f, g	2

The critical path for the project is

• A. a-c-g-h
• B. a-b-e-g-h
• C. a-b-c-f-h
• D. a-d-f-h

Answer 1

The correct option is D a-d-f-h



Various paths:

1. abegh - 17 days

2. acgh - 16 days

3. adfh - 18 days

$\therefore$ a-d-f-h is the critical path.