I have the answer but I am wanting to understand the answer. Please see the attached file.
Chapter 17 Page 684 Number 3.
Seven Jobs must be processed in two operations: A and B. All Seven jobs must go through A and B in that sequence - A first, then B. Determine the optimal order in which the jobs should be sequenced through the process using these times:
Job Process A Time Process B Time
1 9 6
2 8 5
3 7 7
4 6 3
5 1 2
6 2 6
7 4 7
This posting determines the optimal order of sequence in which the jobs should be scheduled through a specific process given processing time of different jobs.