Activity Precedence ES EF LS LF TE FF Manpower Normal Cost Crash Cost $ % COMPLETED Normal Duration (days) 2 Crash Duration (days) 1 A First Activity 14 10000 15000 100 B follows A 2 1000 2000 8 6 100 follows A 8 4000 6000 6 4 100 D follows A 6 1500 2500 5 2 100 E follows A 10 5000 8000 4 2 100 F. follows B, C 16 7000 10000 5 2 80 G follows C,D 4 800 1400 4 2 100 H follows F, G 12 1500 2200 6 3 50 1 follows E 18 6000 13000 2 1 50 J follows H,I 20 12000 20000 6 4 0 a- If an update was done at day 15 from the start of the project what do you conclude b- How can the project finish on time if it is behind in part b c- If activity E was completed in 3 days at a cost of $55000, what do you conclude