QUESTION 4: (20 marks) Continuing with project X from question 3 above; assume the following normal and crashing costs information as follows. Activity A B D E F G H Normal costing Duration (days) Cost (RM) 10 20,000 7 15,000 2 2,000 9 12,000 5 1,800 9 4,900 5 6,000 12 13,600 Crashing Duration (days) Costs (RM) 10 20,000 7 15,000 2 2,000 3 14,400 3 2,000 6 5,800 5 6,000 8 14,200 00 now w Construct a working table which show the activities you would crash and in which order. From this table, a) recommend the activities you would crash and for how many days you would shorten for each of these tasks, b) calculate the overall costs to achieve this, and c) determine what is the project duration after crashing. (20 marks)