(Solved): 2. The diagram below shows an activity graph with estimates of each activity in weeks. Use the ...

2. The diagram below shows an activity graph with estimates of each activity in weeks. Use the activity graph to answer the following questions: a. Calculate the slack for each activity in the graph b. What is the critical path for the activity graph above? c. Suppose 2 extra staff members are available who can work on activity $AB$. If the staff work on $\mathrm{AB}$ the time estimate of $\mathrm{AB}$ is reduced from 7 to 2 weeks. By how much will the time needed to complete the project be reduced?