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Plot Co sells both Product P and Product Q, with sales of both products occurring evenly throughout the year.

Product P

The annual demand for Product P is 300,000 units and an order for new inventory is placed each month. Each order costs $267 to place. The cost of holding Product P in inventory is 10 cents per unit per year. Buffer inventory equal to 40% of one monthâ€™s sales is maintained.

Product Q

The annual demand for Product Q is 456,000 units per year and Plot Co buys in this product at $1 per unit on 60 days credit. The supplier has offered an early settlement discount of 1% for settlement of invoices within 30 days.

Other information

Plot Co finances working capital with short-term finance costing 5% per year. Assume that there are 365 days in each year.

Required:

Calculate the following values for Product P:

(i) The total cost of the current ordering policy; (3 marks)

(ii) The total cost of an ordering policy using the economic order quantity; (3 marks)

(iii) The net cost or saving of introducing an ordering policy using the economic order quantity. (1 mark)

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