What is happening to the U.S. real exchange rate in each of the
following situations?
a. The U.S. nominal exchange rate is unchanged, but prices rise
faster in the United States than abroad.
b. The U.S. nominal exchange rate is unchanged, but prices rise
faster abroad than in the United States.
c. The U.S. nominal exchange rate declines, and prices are unchanged
in the United States and abroad.
d. The U.S. nominal exchange rate declines, and prices rise faster
abroad than in the United States.
ANSWER:
All the parts of this question can be answered by keeping in mind
the definition of the real exchange rate. The real exchange rate
equals the nominal exchange rate times the domestic price level
divided by the foreign price level.
a. The real exchange rate rises.
b. The real exchange rate declines.
c. The real exchange rate declines.
d. The real exchange rate declines.
Exercise 2:
Can purchasing-power parity be used to explain the fact that the
U.S. dollar depreciated by more than 50 percent against the German
mark between 1970 and 2000, but appreciated by more than 100 percent
against the Italian lira during the same period? Explain your
answer.
ANSWER:
The theory of purchasing-power parity would suggest that Italy must
have experienced much more inflation than has the United States
since 1970, and that Germany must have experienced much less
inflation than has the United States since 1970. In fact, that is
exactly what has happened.
Exercise 3:
Molson’s Beer is produced in Canada and sold in many countries. In
the province of Ontario a six-pack of Molson’s beer sold for $8.75
Canadian in 2000. Across the border in Michigan, a six pack of the
same beer was for sale for $5.19 U.S. At the time, the exchange rate
was $0.67 U.S. = $1.00 Canadian.
a. How much would it cost in U.S. currency to buy the beer in
Ontario?
b. How much would it cost in Canadian currency to buy the beer in
Michigan?
c. Is there an arbitrage opportunity? If so, how much profit could
you expect on a six-pack?
ANSWER:
a. 8.75 × 0.67 = $5.86 U.S.
b. 5.19/0.67 = $7.75 Canadian