2 Build 2 pontoon bridges Create supply lines 11 Develop Advance Cavalry Artillery plan cavalry scout reconnaissance placement Attack 1 3 6 9 12 2 5 3 Plan fortifications 10 Army march 8 Cavalry disruption of enemy supply lines Troops build earthworks The general wants to shorten the plan by 2 days. a) What activities will be shortened and at what optimal cost? b) Determine the critical paths. Activity Normal Time Crash Time Normal Cost Crash Cost 1 4,800 6,300 IAWN 2 1 9,100 15,500 3.000 4.000 4 3 3.600 5,000 5 4 3 6,400 12,000 1 1,500 2,000 7 1,800 1,800 8 2,200 2,200 10 2,300 2,300 3.000 3.500 5,000 7,000 12 4,000 4.000