Draw the project network and list the earliest start (ES), earliest finish (EF), latest start (LS) a

Draw the project network and list the earliest start (ES), earliest finish (EF), latest start (LS) and latest finish (LF) and duration for each task

(b) List the tasks on the critical path

(c) What is the expected project duration in weeks?  

(d) What is the slack for each activity?

(e) Prior to the start of the project you realize the duration you calculated in (c) won’t satisfy the client, so you must “crash” it by 2 weeks. What is the best choice of activities to crash and the resulting total crash cost?

ACTIVITY

Immediate predecessor

duration

Crash cost/week

Minimum task duration

A

—

6

N/A

6

B

A

19

$5000

17

C

A

5

N/A

5

D

C

2

$1500

1

E

C

6

$1000

3

F

D, E

6

$3000

5

G

F

1

N/A

1