item x is a standard item stocked in a company's inventory of component parts. each year the firm, on a random basis, uses about 1,600 of item x, which costs $25 each. storage costs, which include insurance and cost of capital, amount to $8 per unit of average inventory. every time an order is placed for more of item x, it costs $16. a. whenever item x is ordered, what should the order size be? (round your answer to the nearest whole number.)