Suppose that a worker in Agland can produce either 10 units of organic grain or 2 units of incense per year, and a worker in Zenland can produce either 5 units of organic grain or 15 units of incense per year. There are 10 workers in Agland and 20 workers in Zenland. Currently the two countries do not trade. Agland produces and consumes 50 units of grain and 10 units of incense per year. Zenland produces and consumes 100 units of grain and no incense per year. The combined output of the two countries is therefore 150 units of grain and 10 units of incense per year. If the two countries decided to trade and completely specialize in producing the good for which each has a comparative advantage, what would the combined yearly output of the two countries be? 50 units of grain and 40 units of incense

100 units of grain and 300 units of incense

150 units of grain and 20 units of incense

200 units of grain and 150 units of incense

6. why the aggregate supply curve slopes upward in the short run in the short run, the quantity of output that firms supply can deviate from the natural level of output if the actual price level in the economy deviates from the expected price level. several theories explain how this might happen. for example, the misperceptions theory asserts that changes in the price level can temporarily mislead firms about what is happening to their output prices. consider a soybean farmer who expects a price level of 100 in the coming year. if the actual price level turns out to be 90, soybean prices will , and if the farmer mistakenly assumes that the price of soybeans declined relative to other prices of goods and services, she will respond by the quantity of soybeans supplied. if other producers in this economy mistake changes in the price level for changes in their relative prices, the unexpected decrease in the price level causes the quantity of output supplied to the natural level of output in the short run.