【单选题】Suppose that a worker in Boatland can produce either 5 units of wheat or 25 units of fish per year, and a worker in Farmland can produce either 25 units of wheat or 5 units of fish per year. There are...
【单选题】Suppose that a worker in Freedonia can produce either 6 units of corn or 2 units of wheat per year, and a worker in Sylvania can produce either 2 units of corn or 6 units of wheat per year. Each natio...
【单选题】If a firm can produce a combination of 60 units of X together with 80 units of Y if it produces 70 units of X, the firm can only produce 60 units of Y, thus the opportunity cost to produce 10 more un...