The following table identifies the work elements, times and immediate predecessors of the assembly line. Assume that assembly line produce 75 units per hour.

Draw the network diagram for this project, Determine ES, EF, LS and LF, Identify the critical path and estimate the projects duration for t_E., Calculate the slack for each activity, What is the cycle time, What is the theoretical minimum number of workstations? , What are the resulting efficiency and balance delay percentages?

\begin{tabular}{|c|c|c|} \hline \multicolumn{1}{c}{ Work Element } & Time (sec) & Immediate Predecessors(s) \\ \hline A & 40 & NONE \\ \hline B & 80 & A \\ \hline C & 30 & A \\ \hline D & 25 & B \\ \hline E & 20 & C \\ \hline F & 15 & B \\ \hline G & 60 & B \\ \hline H & 45 & D \\ \hline I & 10 & E,G \\ \hline J & 75 & F \\ \hline K & 20 & H, I, J \\ \hline \end{tabular} \begin{tabular}{|c|c|c|} \hline \multicolumn{1}{c}{ Work Element } & Time (sec) & Immediate Predecessors(s) \\ \hline A & 40 & NONE \\ \hline B & 80 & A \\ \hline C & 30 & A \\ \hline D & 25 & B \\ \hline E & 20 & C \\ \hline F & 15 & B \\ \hline G & 60 & B \\ \hline H & 45 & D \\ \hline I & 10 & E,G \\ \hline J & 75 & F \\ \hline K & 20 & H, I, J \\ \hline \end{tabular}