QUESTION 2 [20 MARKS] The following information is provided by a contracting company, contracted to build economy houses by the government of Botswana. As a consultant, study the information and use it to answer the following questions raised. Activity Duration (Days) Direct cost (P) Activity Name Normal Crush Normal Crush 1-2 Trench 12 10 3,600 3,880 1-4 Footing 18 14 4,600 5,000 1-3 Foundation 9 6 2,600 3,200 2-4 3 course 7 6 1,800 1,950 2-5 Window level 12 10 3,000 3,240 4-5 Roof level 13 9 36,000 4,240 3-5 Roofing 7 5 1,900 2,400 21,100 23,910 Page 2 of 5 REQUIRED: a) Prepare the network diagram of a project and show the critical path. (7 marks) b) Calculate the normal cost to complete the project if the fixed cost amounts to P200/day. (2 marks) c) Calculate the minimum cost of the project if it is to be completed in 22 days. (11 marks)