40,000

1. 2. Cost Early / Late Start Problem Assume durations are in weeks, weekly cost in $000's. Calculate the early and late weekly expenses. How could you defer $40,000 in weekly expenses for one week in the middle of the project? TE=6 TE=8 TE=2 TL=4 D=4 $40 TE=14 TL=8 TL=8 H=6 $60 TL=14 TE=1 A=1 $10 TL=3 TE=3 E55 $50 TE=8 TE=1 TE=3 TL=3 TE=17 TL=8 TE=7 TL=1 TL=3 TS=17 B=2 $20 F=4 $40 TL=14 J=3 $30 TE=1 TE=3 TL=1 TL=10 TE=14 TL=14 TE=1 C=3 $30 TL=3 TE=12 G=6 $60 1=2 $20 TL=14 TE=4 TE=10 TL=6 TL=12 Task Duration Successors A 1 D B 2 E,F 3 D 4 E F 4 G 6 1 H 6 J | 2 J J none LIIO. Compare Figure Early Late Early Late Early - Late Early Late Weekly Weekly Cumulative Cumulative Cumulative Start Start Week Expense Expense Expense Expense Expense A,B,C B 1 60 20 60 20 40 B,C,D B 2 90 20 150 40 110 C,D,E,F A,C,E 3 160 90 310 130 180 D,E,F,G C,D,E 4 190 120 500 250 250 D,E,F,G 5 190 690 E,F,G 6 840 E,G 110 950 GH 8 120 1070 GH 9 120 1190 HI 10 80 1270 HI 11 80 1350 H 12 60 1410 H 13 60 1470 J 14 30 1500 J 15 30 1530 16 30 1560 Weekly Cost ($000's) 10 20 30 40 50 40 60 60 20 30 150