Think about the prices in the following examples. Determine whether price discrimination occurs in each instance, and if not, why not. Graphs are preferred but not necessary. Consider the circumstances that must exist for pricing discrimination to persist.

a. A child's zoo admission is less expensive than an adult's. a. Sending a letter first class from Los Angeles to New York will cost less than sending it overnight. b. You may typically find coupons in the Sunday newspaper that you can cut out and use to save money on goods. Anyone can purchase a newspaper, and for the majority of customers, the value of the coupons easily outweighs the cost of the newspaper.