1. The project length is ___ weeks.

2. The activities on the critical path are ___ .

In the following table the activities with their precedence sequence and expected time (weeks) are listed for Lillian Fok's construction project and on the right the precedence network is shown: \begin{tabular}{ccc} \hline Activity & Nodes & Time (weeks) \\ \hline J & 12 & 12 \\ K & 13 & 8 \\ L & 24 & 6 \\ M & 23 & 3 \\ N & 34 & 4 \\ O & 45 & 7 \\ P & 35 & 6 \\ \hline \end{tabular}