Assume that you have a project with seven activities labeled A–G (below). Derive the earliest completion time (or early finish—EF), latest completion time (or late finish—LF), and slack for each of the following tasks (begin at time = 0). Which tasks are on the critical path? Draw a Gantt chart for these tasks.

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Preceding Expected Duration Event Critical Slack Path? Activity EF LF A В A 3 C A 4 D E В, С 4 F D 1 G D, E, F 5