Worley Company buys surgical supplies from a variety of manufacturers and then resells and delivers these supplies to hundreds of hospitals. Worley sets its prices for all hospitals by marking up its cost of goods sold to those hospitals by 10%. For example, if a hospital buys supplies from Worley that cost Worley $100 to buy from manufacturers, Worley would charge the hospital $110 to purchase these supplies. For years, Worley believed that the 10% markup