Question: Activity Preceding Activities Required time (weeks) Cost ($) Normal Crash Normal Crash A - 4 2 10000 11000 B A 3 2 6000 9000 C

Activity

Preceding

Activities

Required time

(weeks)

Cost ($)

Normal

Crash

Normal

Crash

A

-

4

2

10000

11000

B

A

3

2

6000

9000

C

A

2

1

4000

6000

D

B

5

3

14000

18000

E

B,C

1

1

9000

9000

F

C

3

2

7000

8000

G

E,F

4

2

13000

25000

H

D,E

4

1

11000

18000

I

G,H

6

5

20000

29000

a) Draw project network and calculate completion time with activities slacks and determine the critical

path.

b) Calculate the cost per week and the number of weeks that can be decreased for each activity

c) If the manager wants to finish the project within 19 weeks, what are the activities that should be

crashed? And what will be the total project cost?

d) What is the maximum time that can be crashed? How much would cost increase? And what is the new

critical path if any?

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