What is the price each type of customer is charged and how many haircuts an hour does Bobbie’s sell? What is the increase in Bobbie’s economic profit that results from price discrimination?

Bobbie’s Hair Care is a natural monopoly. The table shows the demand schedule (the first two columns) and Bobbie’s marginal cost schedule (the middle and third columns). Bobbie has done a survey and discovered that she has four types of customers each hour: one woman who is willing to pay $18, one senior who is willing to pay $16, one student who is willing to pay $14, and one boy who is willing to pay $12. Suppose that Bobbie’s fixed costs are $20 an hour and Bobbie’s price discriminates.

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Price (dollars per haircut) 20 18 16 14 12 10 Quantity (haircuts per hour) 0 | 2 3 45 4 5 Marginal cost (dollars per hour) - 4 8 12 18