In: Operations Management
A supplier offers you the following discount table for the purchase of your main product, whose annual demand you have estimated at 5,000 units. The cost of issuing a purchase order is $ 49, and it has also been estimated that the annual cost of storing a unit in inventory is 20% of the cost of purchasing the product. What is the order quantity that minimizes the total cost of inventory?
Q ( Cantidad) |
Discount % |
Costo Unitario |
0 - 999 |
0 % |
5 |
1 000 - 1 999 |
2 % |
|
2 000 o más |
3 % |
Answer: 1000 units
Explanation:
Annual Demand (D) = 5000
Price per unit (P) =(1 - Discount %/100)*5
Annual Holding Cost per unit = 20% of P
Cost per order (S) = $49
EOQ = SQRT(2*S*D/H)
If EOQ > the upper limit of the range then there is no feasible solution
If EOQ < lower limit of the range then lower limit is the Feasible EOQ
Annual Ordering Cost = (D/Q)*S
Annual Holding Cost = (Q/2)*H
Annual Purchasing Cost = D*P
Total Cost = Annual Ordering Cost + Annual Holding Cost + Annual Purchasing Cost
Total cost for Q=1000 is the lowest
so, Optimal Order Quantity = 1000 units