A. A project manager wanted to reduce six weeks from the projected completion time of the Highway Project in Napoh, Kedah. Activity Predecessor Normal Normal Cost Crash Crash Cost Time Crashing Cost Time ($) Time ($) Reduction Per Week ($) 12 12,000 11 13,000 1 1000 B 9 50,000 7 64,000 2 7000 A 10 4,000 5 7,000 5 600 D B 10 16,000 8 20,000 2 2000 E B 23 125,000 15 200,000 8 9375 F 10 10,000 6 16,000 4 1500 G 35 500,000 25 530,000 10 3000 H D 38 200,000 35 260,000 3 20000 I A 14 30,000 10 52,500 4 5625 J E, GH 4 10,000 1 13,000 3 1000 K F,J,1 6 30,000 4 38,000 2 4000 Totals 171 1213500 1) Calculate the activity Slacks and determine which activities are on the critical path: (3 MARKS) Activity Earliest Latest Earliest Latest Slacks Start Start Finish Finish A D E F G H 1 J K (Ctrl)