假设美元利率和英镑利率均为每年5%。当前的美元英镑均衡汇率与预期美元英镑汇率之间有什么联系？假设预期美

假设美元利率和英镑利率均为每年5%。当前的美元/英镑均衡汇率与预期美元/英镑汇率之间有什么联系？假设预期美元/英镑汇率为每英镑1.52美元并保持不变，英国的年利率升至10%。如果美国的利率仍然保持不变，那么，新的均衡汇率是多少？

Suppose the dollar interest rate and the pound sterling interest rate are the same，5 percent per year．What is the relation between the current equilibrium ＄/￡ exchange rate and its expected future level？ Suppose the expected future ＄/￡ exchange rate，＄1.52 per pound，remains constant as Britain's interest rate rises to 10 percent per year．If the U.S. interest rate also remains constant，what is the new equilibrium ＄/￡ exchange rate？