The AON diagram shown represents a project. Normal and crash times, and the associated costs, are shown for each activity in the accompanying table. The project duration should be shorten one day. Which activity should be crashed one day?

Activity	Normal Time (days)	Crash Time (days)	Normal Cost ($)	Crash Cost ($)
1	Start	Start	-	-
2	2	1	9100	17400
3	3	1	14500	19300
4	4	2	20400	27500
5	5	5	19700	19700
6	6	3	5700	14900
7	6	4	8020	17600
8	6	4	10400	25300
9	End	End	-	-

Question 21Answer

a.1

b.2

c.3

d.4

e.5

f.6

g.7

h.8

i.None of them. It is impossible to crash the project.