A Company Is Faced with Seven Tasks That Have to Be

Essay

A company is faced with seven tasks that have to be processed through two work centers, work center I and then center II. Assume work center I works continuously and that they are using Johnson's rule. Work centers need not change over to new jobs at the same time. Data appears below in hours:
$$\begin{array} { | c | c | c | } \hline \text { ask } & \text { Wark Center I } & \text { Work Center II } \\\hline \text { A } & 2.58 & 3.47 \\\hline \mathrm { B } & 1.66 & 5.84 \\\hline C & 2.71 & 2.41 \\\hline \mathrm { D } & 5.52 & 1.99 \\\hline E & 3.38 & 7.62 \\\hline \mathrm { F } & 5.22 & 1.73 \\\hline \text { G } & 2.89 & 1.11 \\\hline\end{array}$$
a. What is the sequence of tasks?
b. What is the time in hours to complete all the tasks in both work centers?
c. What is the total idle time in hours for work center I?
d. What is the total idle time in hours for work center II?