1) Three activities are candidates for crashing on a computer security project. Activity details are on the following table: Activity Predecessor Normal Normal Cost Crash Time Crash Cost Time A 7 days $6000 6 days $6600 B A 4 days $1200 2 days $3000 C B 11 days $4000 9 days $6000 a) What action would you date to reduce the critical path by one day? b) Assuming no other paths become critical, what action would you take to reduce the critical path by an additional one day? c) What is the total cost of the 2day reduction? 2) Consider the information provided in table and the network diagram below: Activity Normal Time Normal Crash Crash Maximum Crash Cost (weeks) Cost ($) Time Cost ($) weeks per Week ($) (weeks) Reduced A 4 800 3 1,200 l 400 B 3 900 2 1,000 l 100 C 5 1,250 3 2,250 2 500 D 2 800 2 800 0 0 E 5 1,500 4 2,000 I 500 F 6 2,000 5 3,000 I 1,000 G 4 600 3 900 l 300 H 3 900 3 900 0 0 l3 1' (5 / N4) ' [5) \"E9 @ / o o a) Calculate the completion time of the project and identify the activities on the critical path. b) Reduce the completion time ol'the project by 3 weeks in the most economical way. c) Reduce the completion time ol'the project by 5 weeks in the most economical way. d) Calculate the minimum time for completing the project possible