Welfare effects of free trade in an exporting country Consider the New Zealand market for lemons. The following graph shows the domestic demand and domestic supply curves for lemons in New Zealand. Suppose New Zealand's government currently does not allow international trade in lemons. use the black point (plus symbol) to indicate the equilibrium price of a ton of lemons and the equilibrum quantity of lemons in New Zealand in the absence of international trade. Then, use the green triangle (triangle symbol) to shade the area representing consumer surplus in equilibrium. Finally, use the purple triangle (diamond symbol) to shade the area representing producer surplus in equilibrium. 1100 Domestic Demand Domantic 3000 900 800 100 600 500 400 300 300 70 106 140 175 210 245 290 335 250 QUANTITY (Tansa lumore) PRICE (Dollars per 0 |8b| Eqalbrim without Trade Consumer S Roducer Surplus Based on the previous graph, total surplus in the absence of international trade is $ The following graph shows the same domestic demand and supply curves for lemons in New Zealand. Suppose that the New Zealand government changes its international trade policy to allow free trade in lemons. The horizontal black line (Pw) represents the world price of lemons at $800 per ton. Assume that New Zealand's entry into the world market for lemons has no effect on the world price and there are no transportation or transaction costs associated with international trade in lemons. Also assume that domestic suppliers will satisfy domestic demand as much as possible before any exporting or importing takes place. Use the green triangle (triangle symbol) to shode consumer surplus, and then use the purple triangle (diamond symbol) to shade producer surplus. 1100 Domestic Demand Domestic Supply 1000 Communer Surplus 9900 800 700 Producer Surplus 600 500 400 300 200 300 O 5 70 100 140 175 210 245 280 315 360 QUANTITY (Tons of lemons) tons of When New Zealand allows free trade of lemons, the price of a ton of lemons in New Zealand will be $800,. At this price, lemons will be demanded in New Zealand, and tons will be supplied by domestic suppliers. Therefore, New Zealand will export tons of lemons PRICE (Dollars parton) Using the information from the previous tasks, complete the following table to analyze the welfare effect of allowing free trade. Without Free Trade (Dollars) With Free Trade (Dollars) Consumer Surplus Producer Surplus When New Zealand allows free trade, the country's consumer surplus by S and producer surplus by S So, the net effect of international trade on New Zealand's total surplus is a of $
