Law of one price and Purchasing-power-parity
theory
We employ a theory called the Purchasing Power Parity to explain
the movement of nominal exchange rate. The PPP theory is built on
the Law of One Price, which states that a currency must have the
same purchasing power in all countries. Based one this assumption,
PPP theory establishes the functional relationship between Nominal
exchange rate, domestic price level, and foreign price level.
Suppose you are provided with the following information: 1) P...