The graph depicts the marginal revenue (MR), demand (D), and marginal cost (MC) curves for a monopoly
a. Place point P1 at the profit maximizing price and quantity
assuming that the monopolist can only charge a single price.
b. What are the profits of the firm if it charges a single price?

Suppose the monopolist is able to price discriminate between
two groups successfully by charging one group $75 and
charging $35 to the other group.
C.What are the firm's profits if it charges the two prices as
mentioned above?