2. The task information for a construction project is given in Table 1. i) Determine the critical path and expected duration for the construction project. [2 Marks] ii) How early the project will be completed if the tasks were crashed? (Hint: Use step by step crashing method). [4 Marks] iii) What is the least additional cost required to achieve the completion time you determined in part (ii). [2 marks] iv) Suppose, the promised completion date for the project is 8 weeks, and the construction manager faces penalty charges of 10,000 per week if the actual completion time exceeds 8 weeks. What is the project duration that minimizes the total project costs (Hint: Consider crash cost and penalty cost together) [2 Marks) Table 2 Normal Time Crash Time Activity Predecessor(s) (Weeks) (Weeks) A 3 2 5,000 B 6 6,000 2 1 2,500 D A 5 3 4,000 E 2 2 F A 7 5 3,000 G B.DE 7,000 Slope 4 4 2