Consider the Gantt chart shown below where the time scale is in minutes and all activities are performed on an early start basis.How much slack is available in The Great Hair Washing project?
A)10 minutes
B)15 minutes
C)0 minutes
D)5 minutes

Question

Consider the Gantt chart shown below where the time scale is in minutes and all activities are performed on an early start basis.How much slack is available in The Great Hair Washing project? 
A)10 minutes 
B)15 minutes 
C)0 minutes 
D)5 minutes

Quizplus · Accepted Answer

Slack is the amount of time an activity can be delayed without delaying the entire project. In this Gantt chart, we can calculate slack by subtracting the duration of the activity from the difference between the early finish time and early start time of the next activity. For example, the slack for activity A is (20-10)-(25-0) = 5 minutes. Using this method, we can calculate slack for all activities and determine that the critical path is A-C-E-G-I-J, with a total duration of 85 minutes. All other paths have slack, including the path B-D-F-H with 0 minutes of slack, meaning any delay in one of these activities will delay the entire project. Therefore, the slack available in The Great Hair Washing project is 0 minutes.

Consider the Gantt Chart Shown Below Where the Time Scale