Diagnostic Supplies has expected sales of 115,600 units per year, carrying costs of $4 per unit, and an ordering cost of $8 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 60 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?