b. If there are three men available at any one time how long would the project take and how would you allocate the men to the activities?

\begin{tabular}{|l|c|c|c|} \hline Job & \begin{tabular}{c} Time \\ (weeks) \end{tabular} & \begin{tabular}{c} No. of Men \\ required \end{tabular} & \begin{tabular}{c} Precedence \\ requirements \end{tabular} \\ \hline A & 5 & 1 & - \\ \hline B & 10 & 1 & A \\ \hline C & 8 & 2 & A,C \\ \hline D & 6 & 3 & B,C \\ \hline E & 7 & 1 & E \\ \hline F & 4 & 2 & D,F \\ \hline G & 4 & 2 & G \\ \hline H & 2 & 1 & \\ \hline \end{tabular}