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Question
Find the sequence that minimizes the total elapsed time (in hours) required to
complete the following jobs on the machine M1 , M2 and M3 in the order M1M2M3 :
| Machine Jobs | A | B | C | D |
| M1 | 5 | 6 | 9 | 5 |
| M2 | 2 | 4 | 5 | 3 |
| M3 | 3 | 5 | 6 | 7 |
Solution
Minimum of M1 ≥ Maximum of M2
| A | B | C | D | |
| G = M1 + M2 | 7 | 10 | 14 | 8 |
| H = M2 + M3 | 5 | 9 | 11 | 10 |
G → ← H
| D | C | B | A |
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