The jobs listed below needed to be completed. Assume that it is now day 140. If the jobs are sequenced according to longest processing time rule, what is the lateness of job A?
A) 0.0 days
B) 24.0 days
C) 7.4 days
D) 10.0 days
E) 11.6 days

Question

The jobs listed below needed to be completed. Assume that it is now day 140. If the jobs are sequenced according to longest processing time rule, what is the lateness of job A? 
A) 0.0 days 
B) 24.0 days 
C) 7.4 days 
D) 10.0 days 
E) 11.6 days

Quizplus · Accepted Answer

Using the longest processing time rule, the sequence of jobs is C-B-D-A-E. 
- Job C will be completed on day 142
- Job B will be completed on day 148
- Job D will be completed on day 160
- Job A will be completed on day 170 (it has a processing time of 10 days)
- Job E will be completed on day 180

Since job A was due on day 160 (day 140 + 20 days allowed processing time), it is 10 days late (option D).

The Jobs Listed Below Needed to Be Completed