Busyairi Alfan Ramadhan // 29115599 // Operational ManagementThe Campus Wedding Part A1. The Network Diagram

Activity Designation

Immediate Predecessors Time (Day)

Reserve Church & Wedding Hall A - 1

Church Notice B A 17Decorate Church C B 3Choose Cake & Table Decoration D - 2

Catering Notice E D 10Get Bridesmaid F - 10Choose Pattern of Wedding Dress G - 3

Order Material H G 8Dress Sewing I H 11Final Fit J F, I 2Clean & Press Dress K J 2Choose Invitation Style L - 3Order Invitations M L 12Addressing Invitations N M, Q 4Send Invitations O N 1Invitation Sending Process P O 10Guest List Preparation Q - 4Bridesmaid Gift R - 1Dinner & Wedding Rehearsal S C, E, K, P, R 1

Wedding T S 1

2. Critical PathActivity LS-ES Slack On Critical Path

A 9-0 9 -B 10-1 9 -C 27-18 9 -D 18-0 18 -E 20-2 18 -F 16-0 16 -G 4-0 4 -H 7-3 4 -I 15-11 4 -J 26-22 4 -K 28-24 4 -L 0-0 0 ✓M 3-3 0 ✓N 15-15 0 ✓O 19-19 0 ✓P 20-20 0 ✓Q 11-0 11 -R 29-0 29 -S 30-30 0 ✓T 31-31 0 ✓

3. Minimum Cost Plan

Activity NT CT CCA 1 - -B 17 10 100C 3 - -D 2 - -E 10 - -F 10 2 500G 3 - -H 8 5 25I 11 6 600J 2 - -K 2 1 30L 3 - -M 12 5 35N 4 2 50O 1 - -P 10 - -Q 4 - -R 1 - -S 1 - -T 1 - -

If NT>21, Cost equal to sum of the path CC.

Path NT CT CCA-B-C-S-T 23 13 100D-E-S-T 14 - -F-J-K-S-T 16 8 -

G-H-I-J-K-S-T 28 19 655L-M-N-O-P-S-T 32 21 85Q-N-O-P-S-T 21 19 -

R-S-T 3 3 -Total $ 840

Part BWedding preparation takes at most 21 daysIf CT>21 = Project Delayed or If CT<=21 = Project on Schedule

Condition:1. No reduction for church notice (17 days)

Activity NT CT Start FinishA 1 1 1 AprilB 17 10 -> 17C 3 3S 1 1T 1 1

Total 23 23 23 AprilCondition - CT>21 Project Delayed

2. Bridesmaid leaves Guatemala on 10 April (11 days left).Activity NT CT Start Finish

F 10 2 10 AprilJ 2 2K 2 1S 1 1T 1 1

Total 16 7 17 AprilCondition - CT<11 Project on Schedule

3. Guest list preparation delayed 4 days (17 days left). Assuming start from 4 April.Activity NT CT Start Finish

Q 4 4 4 AprilN 4 2O 1 1P 10 10S 1 1T 1 1

Total 20 19 23 AprilCondition - CT>17 Project Delayed

4. Material delivered on 10 April (11 days left).Activity NT CT Start Finish

G 3 3 10 AprilH 8 5I 11 6J 2 2K 2 1S 1 1T 1 1

Total 28 19 29 AprilCondition - CT>11 Project Delayed

5. Caterer’s shop closed 3 days from 8 April (18 days left).Activity NT CT Start Finish

D 2 2 10 AprilE 10 10S 1 1T 1 1

Total 14 14 17 AprilCondition - CT<18 Project on Schedule