(a) The time - cost estimates Activity ity Inmates for t Immediate predecessor A B C DEE D - F G the various activities of a civil project are given below: A B. D C F, E Normal Time Time (days) 6 4 4 No Normal Cost Crash Time ($'000s) (days) 10 12 18 20 30 4 2 Crash Cost ($'000s) 38 12 206 S1236 40 33 50 100 3 10 6 6 2 i. Draw the project nem/05/21-2010 network according to AOA, find the project duration and the critical path. ii. If indirect costs are $ 20000 per day, for what project duration are total project costs minimum. Tabulate your results in a proper format. iii. Find the total slack and free slack for non-critical activities? tou-82784-200 /05/21 (3+6+3 = 12)