CSLB C-33 Painting & DecoratingBusiness and Project ManagementHard
A painting contractor is reviewing their inventory management practices. To minimize waste and optimize storage costs for frequently used, low-value supplies (e.g., masking tape, drop cloths), which inventory management principle is most applicable?
- AABC analysis
- BEconomic Order Quantity (EOQ)
- CJust-In-Time (JIT) inventory
- DFirst-In, First-Out (FIFO)
Show answer & explanationAnswer & explanation
Correct answer: B. Economic Order Quantity (EOQ)
For frequently used, low-value items where ordering costs and holding costs are significant, the Economic Order Quantity (EOQ) model helps determine the optimal order size to minimize the total inventory costs (ordering costs + holding costs). This directly addresses minimizing waste and optimizing storage costs for such supplies.
Why the other options are wrong
- A. ABC analysis categorizes inventory by value (A-high, B-medium, C-low) to prioritize management effort, but doesn't prescribe an ordering quantity.
- C. JIT aims to minimize inventory by receiving goods only as they are needed, which can be risky for common supplies without reliable, frequent delivery.
- D. FIFO is an accounting method for valuing inventory (assuming oldest items are sold first), not an inventory management principle for order quantity optimization.
Economic Order Quantity (EOQ)
A formula-based inventory management model that calculates the optimal quantity of an item to order to minimize the total inventory costs, considering ordering and holding costs.
- Balances ordering costs (per order) and holding costs (per unit per period).
- Assumes constant demand and lead time.
- Helps prevent stockouts and excessive inventory.
Memory trick: Order Economically, Store Efficiently.