i need detailed answer including how to find average flow time and all things please solve it guys thanks

Question 3: Using the information presented in the following table, identify the processing sequence that would result using priority rules (1) MST, (2) SPT, (3) EDD, and (4) CR. For each priority rule, determine (1) average flow time, (2) average hours late, and (3) average WIP. For each factors, which priority rule superior to the others? (Hint: First determine the total job time for each job by calculating the total processing time for the job and then adding in the setup time All times are in hours.)