M. Cotteleer Electronics supplied microcomputer circuitry to a company that incorporates microprocessors into refrigerators and other home appliances. One of the componets has an annual demand of 250 units, and this is constant throughout the year. Carrying cost is estimated to be $1 pet unit per year, and the ordering cost is $20 per order.

(a) To minimize cost, how many units should be ordered each time an order is placed?

(b) How many orders per year are nedeed with the optimal policy?

(c)What is the average inventory if cost are minimized?

(d) Supposr that the ordering cost is not $20, and Cotteleer has been ordering 150 units each time an order is placed. For this order policy (of Q=150Q=150) to be optimal, determine what the ordering cost would have to be.