Table 917
the Pennsylvania Appliance Company Is Installing an Assembly Line

Table 9.17
The Pennsylvania Appliance company is installing an assembly line to produce vacuum cleaners, and you, as an operations manager, are responsible for balancing the line. The work elements to be performed are listed, along with their items and immediate predecessors.
$$\begin{array} { | c | c | c | } \begin{array} { c } \text { Work } \\\text { Element }\end{array} & \text { Time (sec) } & \begin{array} { c } \text { Immediate } \\\text { Predecessor(s) }\end{array} \\\hline \mathrm { A } & 60 & - - \\\mathrm { B } & 40 & \mathrm {~A} \\\mathrm { C } & 30 & \mathrm {~B} \\\mathrm { D } & 20 & \mathrm {~B} \\\mathrm { E } & 40 & \mathrm {~B} \\\mathrm {~F} & 60 & \mathrm { C } \\\mathrm { G } & 70 & \mathrm { D } \\\mathrm { H } & 50 & \mathrm {~F} , \mathrm { G } \\\mathrm { I } & 20 & \mathrm { E } \\\mathrm { J } & 60 & \mathrm { H } , \mathrm { I } \\\hline\end{array}$$
-Use the information in Table 9.17.The company is planning to operate two shifts per day,eight hours per shift.If the desired output rate of the line is 480 units per day,what is the cycle time?

A) 60 seconds
B) 120 seconds
C) 180 seconds
D) 240 seconds