I need help calculating the slack time for activities: A, B, C, D, E, F, G

Roger Ginde is developing a program in supply chain management certification for managers. Ginde has listed a number of activities that must be completed before a training program of this nat predecessors, and times appear in the accompanying table: Activity Immediate Predecessor(s) A B D B E AD F G E, F Time (days) 3 7 3 10 5 5 10 This exercise contains only parts b, c, and d. b) The critical activities for the leadership training program development project are B-D-E-G. c) The project length for the leadership training program development project = 32 days. d) Slack time for each of the activities is