Suppose that the owner of the shop is able to distinguish whether each customer has delicate skin or not. Hence, she can separate the customers into the two groups discussed above (third degree price discrimination). She prepares two (only apparently) different sunscreens and sells them at different prices. In this way, each group will pay its own price per unit. How many units does the shop sell to each group

White truffles are a very prized and rare edible fungus that grow naturally in the countryside near alba, italy. suppose that it costs $200 per day to search for white truffles. on an average day, the total number of white truffles (t) found in alba is t = 20x − x 2 , where x is the number of people searching for white truffles on that day. white truffles can be sold for $100 each. if there is no regulation, how many more people will be searching for white truffles than the socially optimal number?