Question

The precedence relations and duration (in days) of activities of a project network are given in the table. The total float (in days) of activities e and f, respectively, are

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

• A. 1 and 4
• B. 2 and 3
• C. 3 and 1
• D. 0 and 4

Answer 1

The correct option is A 1 and 4



$\text{Total float}=L_j-(E_i+t_E^{ij})$

$\text{Total float for activity: e = 7 - 2 - 4 = 1}$

$\text{Total float for activity: f = 12 - 4 - 4 = 4}$

$\text{Points to Remember:}$

Total float represents the amount of time by which a particular activity can be delayed without delaying the project completion time.