Ray's Satellite Emporium wishes to determine the best order size for its best-selling satellite dish (model TS111). Ray has estimated the annual demand for this model at 500 units. His cost to carry one unit is $100 per year per unit, and he has estimated that each order costs $10 to place.
Required:
Using the EOQ model, how many should Ray order each time? (Round your answer to the nearest whole number.)