What inventory model helps determine the quantity to order to minimize total cost?

What inventory model helps determine the quantity to order to minimize total cost?

• A. Economic Order Quantity
• B. Reorder Point
• C. Safety Stock
• D. Batch Size

Answer: (A)

Finding the optimal order quantity that minimizes total costs uses the Economic Order Quantity model. It shows how to balance the fixed cost of placing an order with the variable cost of holding inventory, to decide how much to order each time. If demand is steady and lead times are predictable, the total annual cost combines the cost of ordering (how many orders per year times the cost per order) and the cost of holding (average inventory times holding cost per unit). Minimizing that total cost leads to the classic result: the optimal order quantity, Q*, is derived from the trade-off between ordering and holding costs. This makes it the best answer because it directly addresses the quantity that minimizes total cost, rather than when to reorder or how much safety stock to keep. Reorder point deals with timing based on lead time and demand; safety stock accounts for variability and service level but not the base quantity that minimizes total cost; batch size is a generic term that doesn’t specifically capture the cost-minimizing quantity under the standard EOQ assumptions.

Finding the optimal order quantity that minimizes total costs uses the Economic Order Quantity model. It shows how to balance the fixed cost of placing an order with the variable cost of holding inventory, to decide how much to order each time. If demand is steady and lead times are predictable, the total annual cost combines the cost of ordering (how many orders per year times the cost per order) and the cost of holding (average inventory times holding cost per unit). Minimizing that total cost leads to the classic result: the optimal order quantity, Q*, is derived from the trade-off between ordering and holding costs.

This makes it the best answer because it directly addresses the quantity that minimizes total cost, rather than when to reorder or how much safety stock to keep. Reorder point deals with timing based on lead time and demand; safety stock accounts for variability and service level but not the base quantity that minimizes total cost; batch size is a generic term that doesn’t specifically capture the cost-minimizing quantity under the standard EOQ assumptions.