Construct a Gantt chart for the following set of activities. Indicate the total project completion time and the slack for each activity. Submit a plain text version of your Gantt chart by using dashes to represent activity lengths (e.g., ---- for 4 months).

Activity Predecessor Time (months)

1 - 6

2 - 8

3 1 4

4 1 3

5 2,3 7

6 4,5 1

7 6 5

8 7 4