Balance the Assembly Line Using the Information Below, and the Longest

Balance the assembly line using the information below, and the longest work- element time rule. The desired output is 360 units per day. Available production time per day is 480 minutes. What is the efficiency for the balanced assembly line? $$\begin{array} { | l | l | l | } \hline \begin{array} { l } \text { Work } \\\text { Element }\end{array} & \begin{array} { l } \text { Time } \\\text { (sec) }\end{array} & \text { Immediate } \\\hline \text { A } & 30 & - \\\text { B } & 20 & \text { A } \\\text { C } & 50 & \text { A } \\\text { D } & 45 & \text { B } \\& 30 & - \\\hline & 20 & \text { A A B B } \\\text { E F G H } & 50 & \text { C } , \text { D } \\& 45 & \text { D } \text { E } \\& 30 & \\& 55 & \\& 35 & \\\hline\end{array}$$ $$72$$