Question: Following task, predecessors, and duration (not the two columns):

Construct CPM network diagram using the activity on arrow.

a) For each task, give the Earliest Start, Latest Star, Earliest Finish, Latest Finish, and Total Float.

b) Sequence of tasks makes up the critical path? Include any dummy activities.

c) Total duration of the project as planned?

\begin{tabular}{|l|c|c|c|c|c|} \hline \multicolumn{1}{|c|}{ Task } & Predecessors & Duration & Task & Predecessors & Duration \\ \hline A & & 6 & N & K & 9 \\ \hline B & & 7 & O & L & 5 \\ \hline C & B & 5 & P & O & 7 \\ \hline D & A, C & 10 & Q & M & 20 \\ \hline E & D, I & 16 & R & M & 10 \\ \hline F & & 9 & S & R & 12 \\ \hline G & F & 11 & T & R & 10 \\ \hline H & & 10 & U & N, P, T & 8 \\ \hline I & G, H & 18 & V & U & 9 \\ \hline J & E & 8 & W & Q, S, V & 10 \\ \hline K & E & 5 & X & Q, S & 6 \\ \hline L & E & 8 & Y & X & 8 \\ \hline M & J & 8 & Z & Q & 5 \\ \hline \end{tabular}