Clarissa seager is the purchasing agent for central valve company, which sells indus¬trial valves and fluid-control devices. one of its most popular valves is the western, which has an annual demand of 4,000 units. the cost of each valve is $90.00, and the inventory carrying cost is estimated to be 10% of the cost of each valve. clarissa has made a study of the costs involved in placing an order for any of the valves that cen¬tral valve stocks, and she has concluded that the average ordering cost is $25.00 per order. furthermore, it takes about 8 work days for an order to arrive from the supplier. dur¬ing this time, the demand per week (= 5 work days) for central's valves is approximately 80. assume there are 250 work days per year.
what is the economic order quantity? round up to the nearest unit