Use Johnsons Rule to obtain the optimum sequence of job processing for the following jobs through a

Question:

Use Johnson€™s Rule to obtain the optimum sequence of job processing for the following jobs through a two-machine flow shop. Each job must follow the sequence of job processing€” machine-1 first, followed by machine-2. All job times listed are in hours:

Job Machine-2 Machine-1 2.80 A 4.50 1.70 4.00 2.50 3.30 3.70 5.50 4.00 1.50