11. Suppose that you develop a software product called "EconSolver" which takes in the parameters of an economic problem and first determines how to solve it and then solves it. You have two potential markets for this product: corporations (c) and students (s). The demand schedules you have estimated are: Price Dc 300 10 275 11 250 12 225 13 200 14 175 15 150 16 Ds 0 2 4 6 8 10 12 Production, distribution and software support costs are estimated to be $50 per copy for each type of customer. (i) Assume that you could only charge one price for this product regardless of customer type. What would that price be and how much profit would you make? (ii) Assume that you could practice 3rd degree price discrimination in this market. What price would you charge each customer type and what would your total profits be? (iii) Use the language of economics to explain why 3rd degree price discrimination works in this example.

9. Let (inverse) demand be Pb = 84 - 1 Qb and (inverse) supply be Pv = 20 + 2 Qv. What quantity will buyers purchase if the market is competitive? Answer: your answer Submit Price ($) $200 $ 180 $ 160 $140 $120 $100 $80 $ 60 $40 $20 $0 0 10 20 Demand 30 40 Supply 50 Eqm 60 70 80 90

1. Exercise 14.1 The price elasticity of demand for a textbook sold in the United States is estimated to be -2, whereas the price elasticity of demand for books sold overseas is -3. The U.S. market requires hardcover books with a marginal cost of $40; the overseas market is normally served with softcover texts on newsprint, having a marginal cost of only $15. The profit-maximizing price in the U.S. market is that MR P× (1+ × (1+)) and the profit-maximizing price in the overseas market is (Hint: Remember

A1). The price, p, that a bookstore charges for a special gift edition of a popular trilogy is related to the demand, q, by the equation 100pq + q? = 5,000,000. Suppose the price is currently set at $40. (a). At what rate is the demand currently changing with respect to this price? (Include units) (b). At what rate is the revenue currently changing with respect to this price? (Hint: use the chain rule). (Include units). (c). Suppose the demand is currently increasing at a rate of 50 copies per month. How fast is the price currently changing per month? (again, assume the price is currently $40).Include units.

Q4) Assume a market of a specific good. The demand and supply equation is as shown below: Pp = 70 – 3QD Ps = 5 + 20s The demand price elasticities is inelastic. From the firms' perspective, the revenue would be higher if price increases. Let's assume that the market is currently not at the equilibrium with the market price being higher by 2 units than the equilibrium price. 1. Find the market quantity 2. Find the new Consumer Surplus 3. Find the new Producer Surplus

Question 2: Suppose you have the following information about the demand and supply of cotton in the U.S.: Price 9 15 25 35 U.S. Supply 4 12 17 U.S. Demand 40 36 30 20 10 (a) Determine the equations of the supply and demand curves. Assume that the two equations are linear. (b) Determine the market equilibrium price and quantity. (c) Now suppose that the US can import an arbitrary quantity of cotton at a price of 15 Dollars. How many units will the U.S. import?