Chapter 21 – The Balance of Payments, Exchange Rates, and Trade Deficits
21–10
Answer: -$372
Feedback: Consider the following example. China had a $372 billion overall current
account surplus in 2007. Assuming that China’s net debt forgiveness was zero in 2007
(its capital account balance was zero), by how much did Chinese purchases of financial
3. Refer to following table, in which Qd is the quantity of yen demanded, P is the dollar price of
yen, Qs is the quantity of yen supplied in year 1, and Qs‘ is the quantity of yen supplied in year 2.
All quantities are in billions and the dollar-yen exchange rate is fully flexible. LO3
a. What is the equilibrium dollar price of yen in year 1?
b. What is the equilibrium dollar price of yen in year 2?
c. Did the yen appreciate or did it depreciate relative to the dollar between years 1 and 2?
d. Did the dollar appreciate or did it depreciate relative to the yen between years 1 and 2?
e. Which one of the following could have caused the change in relative values of the dollar and
yen between years 1 and 2: (1) More rapid inflation in the United States than in Japan; (2) an
increase in the real interest rate in the United States but not in Japan; or (3) faster growth of
income in the United States than in Japan.
Feedback: Consider the following example. Refer to following table, in which Qd is the
quantity of yen demanded, P is the dollar price of yen, Qs is the quantity of yen supplied
in year 1, and Qs‘ is the quantity of yen supplied in year 2. All quantities are in billions
and the dollar-yen exchange rate is fully flexible.