A canned food company will produce ABC type of food. From the data for the last 1 month, the largest demand reached 5,000 packs/day, and the smallest demand reached 1000 packs/day. The inventory of goods in warehouse is up to 600 packs/day at most, and at least up to 100 packs/day. With all its limitations, until now, the company has only been able to produce a maximum of 7000 packages/day, and for the sake of efficiency and human resources, the company is expected to produce at least 2000 packages per day.

If the company's production process uses the following 4 rules:

•Rule 1: IF demand is DOWN and supply is A LOT THEN production of goods is DECREASING

•Rule 2: IF demand is DOWN and supply is LITTLE THEN the production of goods is DECREASING

•Rule 3: IF demand is UP and supply is A LOT THEN the production of goods is INCREASING

•Rule 4: IF demand is UP and supply is LITTLE THEN the production of goods is INCREASING

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Case 1

What if the number of DEMAND = 2500, INVENTORY = 500, how many ABC type of food packaging should be produced?

Case 2

What if the number of DEMAND = 4500, INVENTORY = 150, how many ABC type of food packaging should be produced?

Case 3

What if the number of DEMAND = 5000, INVENTORY = 75, how many ABC type of food packaging should be produced?

For each of the above cases use the SUGENO, TSUKAMOTO, MAMDANI methods.