James Smith operates a kiosk in downtown Chicago, at which he sells one style of baseball hat. He buys the hats from a supplier for $ 16 and sells them for $ 20. James's current breakeven point is 15,000 hats per year. How many hats must James sell to break even if his supplier raises the price of the hats to $ 17 per hat? (Use the rounded contribution margin per unit for computation.) hats