Abuyer for a department store orders sweaters about 6 months before the winter season. the store plans to hold a march clearance sale to sell any surplus goods by february 29. each piece costs $100 per pair and sells for $120 per pair. at the sale price of $60 per pair, it is expected that any remaining stock can be sold during the march sale. assume that a uniform probability distribution ranging from 250 to 450 items describes the demand. the expected demand is 300. in the context of the single period inventory system, the optimal order size q must satisfy the condition