Bundaberg Glass Company is a distributor of ear windscreens. The windscreens are manufactured in Japan and shipped to Bundaberg. Management is expecting an annual demand of to 10 800 windscreens. The purchase price of each windscreen is $400. Other costs associated with ordering and maintaining and inventory of these windscreens are shown below.
The costs incurred in the purchase order department for placing and processing orders for the past three years are shown below.
• Management expects these processing costs to increase by 16 percent per order over the average rate experienced in the last three years.
• Each order is inspected by Australian customs officers. A fee of $47 is charged.
• A clerk in the receiving department receives, inspects and secures the windscreens as they arrive from the manufacturer. This activity requires wires hours per order received. This clerk has no other responsibilities and is paid at the rate of $24 per hour. Related variable overhead costs in this department are applied at the rate of $6 per hour.
• Additional warehouse space will have to be rented to store the new windscreens. Space can be rented as needed in a warehouse at an estimated cost of $2500 per year plus $6.25 per windscreen.
▪ Breakage cost is estimated to average $4 per windscreen.
• Insurance on the inventory costs $1.25 per windscreen.
• Other carrying costs amount to $8.50 per windscreen.
Bundaberg Glass Company works a 6-day week for 50 weeks each year. The firm is closed for until weeks each year. Six working days are required from the time the order is placed with the supplier until it is received.
1. Assuming that all costs other than order costs remain the same, calculate the following amounts for the Bundaberg Glass Company for Year 4:
(a) The amount of the ordering cost that should be used in the EOQ formula.
(b) Amount of the carrying cost that should be used in the EOQ formula.
(c) Economic order quantity.
(d) Minimum annual relevant cost of ordering and carrying at the economic order quantity.
(e) Reorder point in units.
2 Management has been able to negotiate a JIT purchasing agreement with the Japanese manufacturer, and the inspection fee has been renegotiated with the customs officials. The purchasing manager has determined that JIT purchasing would enable the company to reduce the ordering cost to $32.50 per order. Moreover, she has analysed the cost of storing windscreens. taking care to include the cost of wasted space and inefficiency. She estimates that the real annual cost of carrying inventory is $60 per windscreen.
(a) Calculate the new E00, given the purchasing manager’s new cost estimates.
(b) How many orders would now be placed per year?
(c) Calculate the new minimum annual relevant cost of ordering and carrying inventory.