The ABC company is planning to implement a new information system for its customer. The following table shows the relati

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The ABC company is planning to
implement a new information system for its customer. The following
table shows the relationship among the project activities. The
customer only allows ABC company to complete the project in 35
weeks, otherwise, they will charge ABC company $30,000.
Activity
Immediate predecessor
Time estimates (weeks)
Optimistic
Most likely
Pessimistic
A
--
1
2
3
B
--
2
5
8
C
--
1
3
5
D
A
4
10
25
E
A
3
7
12
F
B
10
15
25
G
C
5
9
14
H
D, E
2
3
7
I
D, E, F
1
4
6
J
D, E, F, G
2
5
10
K
H, I, J
2
2
2