A facility is trying to set up an assembly line, and has identified the various tasks, and their relationship to each other, as shown in the following table. Managers wish to produce 600 units per day during 8-hour operations.

1.) 1. Find an optimum layout in the sequence of workstations where every work element is assigned in a workstation. Provide the sequence of workstations with tasks clearly.

2.) Find efficiency of the optimum layout.

\begin{tabular}{|c|c|c|} \hline Task & Immediately preceding task(s) & Processing time (seconds) \\ \hline A & & 30 \\ \hline B & & 25 \\ \hline C & & 15 \\ \hline D & A & 26 \\ \hline E & A & 45 \\ \hline F & B, C, D & 20 \\ \hline G & E & 20 \\ \hline H & F, G & 40 \\ \hline \end{tabular}