Diagnostic Supplies has expected sales of 158,700 units per year, carrying costs of $3 per unit, and an ordering cost of $8 per order.

a. What is the economic ordering quantity? 920 units

b-1. What is the average inventory? 460 units

b-2. What is the total carrying cost?

Assume an additional 40 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?

I need help with B-2, C-1, C-2