Q. The R&D department 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,
times also sequences needed:

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

a. Draw the ne2rk diagram.

b. Elucidate what is the critical path?

c. Suppose you need to shorten the completion time as much as possible also you have the option of shortening any or all of B, C, D also G every one week. Which would you shorten?

d. Elucidate what is the new critical path also earliest completion time?