Given a simple project illustrated in the following table

Activity Immediate Predecessors Time (weeks) 1 - 2 2 1 3 3 1 2 4 2,3 5 5 4 3

Assume that "Activity 1" actually finished at 2 weeks, "Activity 2" actually finished at 6 weeks, and "Activity 3" actually finished at 5 weeks. Given the actual project progress, what is the expected project completion time?

\begin{tabular}{|l|l|l|} \hline Activity & Immediate & Time \\ & Predecessors & (weeks) \\ \hline 1 & - & 2 \\ \hline 2 & 1 & 3 \\ \hline 3 & 1 & 2 \\ \hline 4 & 2,3 & 5 \\ \hline 5 & 4 & 3 \\ \hline \end{tabular}