If the demand = 75 per month, S = $10 per order, and H = $0.45 per unit per year, what is the economic order quantity? Question 3. If EOQ = 50 units, order costs are $5 per order, and carrying costs are $2 per unit/year, what is the Annual Demand? Question 4. If the unit cost is $20, and the annual holding cost is 10%. Annual demand is 400 units, and the order cost is $1 per order. What is the optimal quantity? Question 5. If the order quantity (Q) = 20 units, annual demand = 500 units, ordering cost = $2, and holding cost = 0.5. find the total cost