Problem: The R&D dept. is planning to bid on a large project for the development of a new communication system for commercial planes.
The accompanying table shows the activities, time & sequence required:
|
Activity
|
Immediate predecessor
|
Time (weeks)
|
|
A
|
---
|
3
|
|
B
|
A
|
2
|
|
C
|
A
|
4
|
|
D
|
A
|
4
|
|
E
|
B
|
6
|
|
F
|
C,D
|
6
|
|
G
|
D,F
|
2
|
|
H
|
D
|
3
|
|
I
|
E,G,H
|
3
|
1) What is the critical path?
2) Suppose you want to shorten the completion time as much as possible, & you have the option of shortening any or all of B,C,D, and G each one week. Which would you shorten?
3) What is the new critical path & earliest completion time?