Acme Pharmaceutical Company discovers a vaccine that prevents the common cold and has a patent that grants it a monopoly on this drug. Acme has plants in both the North America and Europe and can manufacture the drug on either continent at a marginal cost of $10. Assume there are no fixed costs. In Europe, the demand for the drug is Q E = 70 P E , where Q E is the quantity demanded when the price in Europe is P E . In North America the demand for the drug is Q N = 110 P N , where Q N is the quantity demanded when the price in North America is P N