2. Consider a project having the following seven activities:

Normal Normal Crash Crash Maximum

Immediate Time Cost Time Cost Weeks

Activity Predecessors (weeks) ($) (weeks) ($) Reduced

A none 4 3,000 3 6,000 1

B none 3 5,000 2 7,000 1

C A 9 2,000 7 4,000 2

D A, B 2 3,000 2 3,000 0

E B 9 4,000 6 7,000 3

F C, D 8 4,000 6 9,000 2

G E, F 5 2,000 3 5,000 2

(a) What is the expected project completion time? (3pts)

(b) What is the critical path? (3pts

(c) What is the most economical way and how much will it cost to reduce the completion time of the project by three weeks? (4pts)