Complete the forth column of Table 3 (already completed), and shorten the project duration by 4 days. Please make sure to include a network diagram for each crashing step.

Table 3 Activity Time Improvement (day) 2 Cost Increase (1,000) 20 Cost / Improvement (1,000 / day) 10 A4 A5 2 18 8 A7 un 16 3.2 Table 3 Activity Time Improvement (day) 2 Cost Increase (1,000) 20 Cost / Improvement (1,000 / day) 10 A4 A5 2 18 8 A7 un 16 3.2