Rocky mountain tire center sells 9,000 go-cart tires per year. The ordering cost for each order is $40, and the holding cost is 50% of the purchase price of the tires per year. The purchase price is $25 per tire if fewer than 200 tires are ordered, $16 per tire if 200 or more, but fewer than 8,000, tires are ordered, and $25 per tire if 8,000 or more tires are ordered.
How many tires should rocky mountain order each time it places an order? Rocky mountains optimal order quantity is ___units
how much should it cost