)a supplier of parts to an assembly plant in the household appliance industry is required to make deliveries on a just-in-time basis (daily). for one of the parts that must be delivered, the daily requirement is 100 parts, five days/wk, 52 wk/yr. however, the supplier cannot afford to make just 100 parts each day because of the high cost of changing over the production machine. instead, it must produce in larger batch sizes and maintain an inventory of the parts from which 100 units are withdrawn for shipment each day. cost per piece is $16 and holding cost is 24% of piece cost. changeover time for the production machine used to produce the part is 2.5 hr and the cost of downtime on this machine is $180/hr. determine (a) the economic batch size and (b) the total annual inventory cost for the data. (c) how many weeks of demand does this batch quantity represent?