1. (50 pts.) Consider the following activity on arc project description with associated cost data shown in below table. The cost data represents the total cost and should be considered linear with time. Reduce the project duration to minimum duration and calculate the cost. Step 1: Draw the project network diagram and calculate the criticalpaths and project duration and initial cost: Paths: Project Normal Cost: Step 2: Calculate the cost-slope for each activity: Step 3: Rank the activities in ascending order based on their cost-slopes and show the crashable times: Stequ: i) Crash activities of critical path as per lowest cost slope first. ii) Calculate the new direct cost by adding cost of crashing to the normal cost. Step 5: Since critical path duration is reduced so other paths may also become critical. Project duration can be reduced by simultaneously crashing activities in the parallel critical paths. Step 6: By crashing as per Step 4 and 5, a point is reached when either no crashing is possible, or crashing does no result in the reduction of project duration. Crashing step 1: ew Project Cost =