For the network shown:

a. Determine the critical path and the early completion time in weeks for the project.

b. For the data shown, reduce the project completion time by three weeks. Assume a linear cost per week shortened, and show, step by step, how you arrived at your schedule.

Activity Normal Time Normal Cost Crash Time Crash Cost A 5 $ 7,000 3 $13,000 B 10 12,000 7 18,000 C 8 5,000 7 7,000 D 6 4,000 5 5,000 E 7 3,000 6 6,000 F 4 6,000 3 7,000LO5-1 G 4 7,000 3 9,000