Optimization of Order Size for a Small Manufacturing Firm

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A small manufacturing firm purchasing 3400 pounds of chemical dye per year seeks to minimize total costs by optimizing order sizes. With initial conditions and pricing details provided, calculations for order sizes at different price points are considered to determine the most cost-effective solutions. By analyzing ordering costs, inventory carrying costs, and supplier discounts, the firm aims to enhance operational efficiency and reduce expenses.


Uploaded on Apr 19, 2024 | 2 Views


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  1. Assignment Ch12(b) A small manufacturing firm uses approximately 3400 pounds of chemical dye per year. Currently the firm purchases 300 pounds per order and pays $3 per pound. The ordering cost is $100 and inventory carrying cost is 51 cents per pound per year. D= 3400, S= 100, H=0.51 a) The supplier has just announced that orders of 1000 pounds and more will be filled at a price of $2 per pound. Determine the order size that will minimizes the total cost. b) If the supplier offered a discount at 1500 pounds instead of 1000 pounds, what order size will minimize total cost?

  2. Ordering and Carrying Costs The Total-Cost Curve is U-Shaped Q 2 D = + TC H S Annual Cost Q Ordering Costs Order Quantity (Q) QO (optimal order quantity)

  3. Ordering, Carrying, and Purchasing Costs Cost Adding Purchasing cost doesn t change EOQ TC with PD TC without PD PD 0 Quantity EOQ

  4. Price Discount Cost p1 p2 0 Quantity

  5. Total Cost Including Purchasing Cost Cost p1 p2 0 Quantity EOQ

  6. Price Breaks: EOQ Preferred Cost 0 Quantity EOQ

  7. Price Breaks: Discount Point Preferred Cost 0 Quantity Q

  8. Price Breaks: EOQ Preferred Cost 0 Quantity EOQ

  9. The Problem: Part A A small manufacturing firm uses approximately 3400 pounds of chemical dye per year. Currently the firm purchases 300 pounds per order and pays $3 per pound. The ordering cost is $100 and inventory carrying cost is 51 cents per unit per year. D=3400, S= 100, H=.51 a) The supplier has just announced that orders of 1000 pounds and more will be filled at a price of $2 per pound. 2 ( 2 100 3400 )( ) SD = = = 1155 EOQ Q P 0-999 3 1000 2 51 . H DONE

  10. The Problem: Part B A small manufacturing firm uses approximately 3400 pounds of chemical dye per year. Currently the firm purchases 300 pounds per order and pays $3 per pound. The ordering cost is $100 and inventory carrying cost is 51 cents per unit per year. D=3400, S= 100, H=.51 b) Determine the order size that will minimizes the total cost. If the supplier offered a discount at 1500 pounds instead of 1000 pounds, what order size will minimize total cost? = 1155 EOQ Q P 0-... 3 1500 2

  11. The Problem: Part B b) If the supplier offered a discount at 1500 pounds instead of 1000 pounds, what order size will minimize total cost? Q P 0-... 3 1500 2 D= 3400, S=100, H= .51 = 1155 EOQ TC = HQ/2 + SD/Q + PD TC ( Q = 1155 , P = 3) = 0.51(1155)/2 + 100(3400)/1155 + 3(3400) TC = 294.5 + 294.5 + 10200 = 10789 TC ( Q = 1500 , P = 2) = 0.51(1500)/2 + 100(3400)/1500 + 2(3400) TC = 382.5+226.7 +6800 = 7409.2

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