Suppose that the nominal interest rate on 3-month Treasury bills is 8% in the United States and 6% in the United Kingdom, and the rate of inflation is 10% in the U.S. and 4% in the U.K. a. What is the real interst rate in each nation? b. In which direction would international investment flow in response to these real interest rates?基于这种实际利率,国际资本将如何流动? c. What impact would these investment flows have on the dollar's exchange value? 资本流动会对美元的外币价值产生什么影响?