The jobs listed below needed to be completed. Assume that it is now day 140. If the jobs are sequenced according to shortest processing time rule, what is the average completion time?
$$\begin{array} { | c | c | c | }
\hline \text { Job } & \begin{array} { c }
\text { Processing } \
\text { Time (days) }
\end{array} & \begin{array} { c }
\text { Job due date } \
\text { (days) }
\end{array} \
\hline \text { A } & 20 & 180 \
\hline \text { B } & 30 & 200 \
\hline \text { C } & 10 & 175 \
\hline \text { D } & 16 & 230 \
\hline \text { E } & 18 & 210 \
\hline
\end{array}$$
A) 47.6 days
B) 60.2 days
C) 94.0 days
D) 2.5 days
E) 238.0 days

Question

The jobs listed below needed to be completed. Assume that it is now day 140. If the jobs are sequenced according to shortest processing time rule, what is the average completion time?
$$\begin{array} { | c | c | c | } 
\hline \text { Job } & \begin{array} { c } 
\text { Processing } \
\text { Time (days) }
\end{array} & \begin{array} { c } 
\text { Job due date } \
\text { (days) }
\end{array} \
\hline \text { A } & 20 & 180 \
\hline \text { B } & 30 & 200 \
\hline \text { C } & 10 & 175 \
\hline \text { D } & 16 & 230 \
\hline \text { E } & 18 & 210 \
\hline
\end{array}$$
A) 47.6 days
B) 60.2 days
C) 94.0 days
D) 2.5 days
E) 238.0 days

Quizplus · Accepted Answer

The jobs are sequenced by shortest processing time: C (10), D (16), E (18), A (20), B (30). Completion times are: C=150, D=166, E=184, A=204, B=234. Average completion time = (150+166+184+204+234)/5 = 47.6 days.

The Jobs Listed Below Needed to Be Completed A) 476 Days B) 60

The Jobs Listed Below Needed to Be Completed A) 476 Days
B) 60