Suppose that a price discriminating monopolist is able to divide its market into two groups. if the firm sells its product for $25 to the group whose customers have the least elastic demand, what price are they likely to charge to the group whose customers have the most elastic demand?

David paid $975,000 for two beachfront lots in coastal south carolina, with the intention of building residential homes on each. two years later, the south carolina legislature passed the beachfront management act, barring any further development of the coast, including david's lots. when david files a complaint to seek compensation for his property, south carolina refuses, pointing to a passage in david's own complaint that states "the beachfront management act [was] properly and validly designed to south carolina's " is south carolina required to compensate david under the takings clause?