2. Activity Nor. Time Predec. Crash time Crash cost Nor. cost

A 4 - 3 FD 500FD 300

B 3 A 1 FD 325FD 250

C 5 A,B 4 FD 550FD 400

D 6 B, C 3 FD 250FD 150

E 3 C,D 2 FD 200FD 300

And, possible crash cost and time for each activity;

Determine:

1. Crash cost per week for each activity

Which activities should be crashed to meet a project deadline of 13 weeks at minimum cost. Assume partial crash is allowed.