Use the following information to compress one time unit per move using the least-cost method. Reduce the schedule until you reach the crash point of the network.

Activity Crash cost Maximum

ID (Slope) Crash Time Normal time Normal cost

A 0 0 3 150

B 100 1 4 200

C 60 1 3 250

D 40 1 4 200

E 0 0 2 250

F 30 2 3 200

G 20 1 2 250

H 60 2 4 300

I 200 1 2 200

Total direct normal costs $2,000

The indirect costs for each duration are $1,500 for 17 weeks, $1,450 for 16 weeks, $1,400 for 15 weeks, $1,350 for 14 weeks, $1,300 for 13 weeks, $1,250 for 12 weeks, $1,200 for 11 weeks, and $1,150 for 10 weeks.

For each move identify what activity or activities were crashed and the adjusted total cost, making the most appropriate choice among activities that cost the same.

To compress from time period 17 to time 16, crash the following activity(s): (You may select more than one answer. Single click the box with the question mark to produce a check mark for a correct answer and double click the box with the question mark to empty the box for a wrong answer. Any boxes left with a question mark will be automatically graded as incorrect.)

check all that apply 1

A

B

C

D

E

F

G

H

I

To compress from time period 16 to time 15, crash the following activity(s): (You may select more than one answer. Single click the box with the question mark to produce a check mark for a correct answer and double click the box with the question mark to empty the box for a wrong answer. Any boxes left with a question mark will be automatically graded as incorrect.)

check all that apply 2

A

B

C

D

E

F

G

H

I

To compress from time period 15 to time 14, crash the following activity(s): (You may select more than one answer. Single click the box with the question mark to produce a check mark for a correct answer and double click the box with the question mark to empty the box for a wrong answer. Any boxes left with a question mark will be automatically graded as incorrect.)

check all that apply 3

A

B

C

D

E

F

G

H

I

What is the crash point of the network? (Hint: To obtain crash point, crash the project as much as is possible.)

Time period. weeks

Total cost.

What is the optimum cost-time schedule for the project? weeks.

What is this cost?

Activity ID A B D Crash cost Maximum (Slope) Crash Time Normal time Normal cost 0 0 3 150 100 1 4 200 60 1 3 250 40 1 4 200 0 0 2 250 30 2 3 200 20 1 2 250 60 2 4 300 200 1 2 200 Total direct normal costs $2,000 E F G H 1 The indirect costs for each duration are $1,500 for 17 weeks, $1,450 for 16 weeks, $1,400 for 15 weeks, $1,350 for 14 weeks, $1,300 for 13 weeks, $1,250 for 12 weeks, $1,200 for 11 weeks, and $1,150 for 10 weeks. B F G 4 3 2 D 1 3x 4 2 E H Normal time 17 3 2x 4 Total direct cost $2,000