Diagnostic Supplies has expected sales of 120,000 units per year, carrying costs of $6 per unit, and an ordering cost of $9 per order. a. What is the economic ordering quantity?

b-1. What is the average inventory?

b-2. What is the total carrying cost?

Assume an additional 90 units of inventory will be required as safety stock. c-1. What will the new average inventory be?

c-2. What will the new total carrying cost be?