suppose the nominal exchange rate between the japanese yen and the u.s. dollar is 100 yen per dollar. further, suppose that a pound of hamburger costs $2 in the united states and 250 yen in japan. what is the real exchange rate between japan and the united states? a. 0.5 pound of japanese hamburger/pound of american hamburger b. 0.8 pound of japanese hamburger/pound of american hamburger c. 1.25 pounds of japanese hamburger/pound of american hamburger d. 2.5 pounds of japanese hamburger/pound of american hamburger e. none of the above