Consider a project with 7 activities as represented in table 1 above. The predecessors of each activity and the duration of the activities are given. The number of compressors (consider it as a resource) required by each activity is also listed. The organization has only 6 compressors available for the project. Table 2 below represents the Gantt chart of the project. Using a histogram, level the resources. After resource levelling what is the project duration