A pizza monopolist employing third-degree price discrimination charges students $10 per pizza and everyone else $15 per pizza Students must show the ID before they can get the discount The marginal cost of this monopolist is $5 whether or not the customer is a student. The price elasticity of demand for the students is

The price elasticity of demand for the students is:

inelastic.

Explanation:

The price elasticity of demand for the students is inelastic because there is no change in the quantity demanded by students that changes the price at which pizza is sold to the students.  If one student buys the pizza, the price charged remains $10 and if 1,000 students buy the pizza, the price remains $10 per unit.  Therefore, students' demand for the pizza is said to be static irrespective of price because the price is fixed.

answer; by looking at total product,marginal product,and changes in both after changes in inputs