Qu.4 Based on the given table below, answer the following questions. (30 points) Show all calculation steps in the answers Direct Costs Normal Activity Slope Crash Maximum Crash Time ID Time M N Time 7 8 6 10 8 9 6 5 0 Cost (KD) 5000 6200 7300 4900 4100 3700 2900 5 6 5 9 5 Cost (KD) 6000 7000 8200 5100 6200 4900 3700 Q R S CPM is NPQRS 7 4 4 a) Calculate the maximum crashing time and slope for each activity (14 points) b) Crash the project by 6 weeks. (10 points) c) Identify the maximum crashing time for the overall project? Illustrate briefly, for how many weeks you can perform crashing. (6 points)