Which of the following does NOT belong to assumptions in calculating EOQ in the basic inventory model?

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  1. Material cannot be supplied in variable quantities
  2. Demand is continuous
  3. Delivery of all items are instantaneous
  4. Lead time is constant

Answer (Detailed Solution Below)

Option 1 : Material cannot be supplied in variable quantities
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Concept:

The Economic Order Quantity (EOQ) model is a fundamental inventory management formula used to determine the optimal order quantity that minimizes total inventory costs, including ordering and holding costs.

Standard Assumptions of EOQ:

  • Demand is known, constant, and continuous
  • Lead time (the time between ordering and receiving) is constant
  • Replenishment is instantaneous (all items are delivered at once)
  • No stockouts or shortages are allowed
  • Ordering and holding costs are constant and known

Analysis:

Option 1: "Material cannot be supplied in variable quantities" – This is not a part of EOQ assumptions. EOQ aims to determine the best (variable) quantity to order, making this statement invalid in the EOQ context.

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