it costs a producer $400 to manufacture a product that is distributed through wholesalers and retailers. the markups at the producer, wholesaler, and retailer levels are 20%, 20% and 50%, respectively. the wholesaler's selling price for the product is , and the retailer's selling price is . a. $625; $1250 b. $576; $864 c. $480; $576 d. $500; $625 e. cannot be determined from the information provided
