Solve the below problem:
Q: In a machine cell, there are five machines (A, B, C, D and E). The accompanying table gives the machine loading times, automatic processing times, and machine cost per hour. It takes a machine operator 0.5 minutes to move between two machines. A machine operator cost $10 per hour. Determine the optimal way of machine coupling.
Time and cost Machine
A B C D E
Load and unload(min/unit) 3 6 2 5 4
Auto Process(min/unit) 8 11 8 14 8
Machine Cost(min/unit) 11 12 13 14 15