1. Develop a product sequence plan by determining the order in which all product types will be processed. Consider the following priority rules: (Due November 14, 2021, by midnight)

• FCFS (First Come First Served)
• SPT (Shortest Processing Time)
• EDD (Earliest Due Date)
• LPT (Largest Processing Time)

2. As you have developed the sequence plan using SPT and EDD rules, determine the following: (Due November 14, 2021, by midnight)

• The average amount of time from when a product type arrives until it is finished

(Average flow time)

• The time needed to complete the group of product types from the beginning of the first product type to the completion of the last product type (makespan)
• The average tardiness
• Which product is found tardy?
• Which priority rule would you recommend for minimizing the average flow time? Justify your answer.
• Draw a Gantt chart of the SPT rule sequence

3. Develop a simple linear programming model including decision variables, constraints, and objective function if you want to minimize the cost of the ending inventory of product type A. Assume that the management does not want to produce more than 650 units every month. The ending inventory of a month equals the starting inventory plus the produced unit minus the demand of each period. Make sure you consider that the staring inventory of the current month is the ending inventory of the previous month.