Answer:
Real exchange rates should remain constant over time.
Step-by-step explanation:
Price can be defined as the amount of money that is required to be paid by a buyer (customer) to a seller (producer) in order to acquire goods and services. Thus, it refers to the amount of money a customer or consumer buying goods and services are willing to pay for the goods and services being offered. Also, the price of goods and services are primarily being set by the seller or service provider.
Purchasing power parity (PPP) can be defined as an economic theory of exchange rate determination which states that, the exchange rates between currencies of two different countries are in equilibrium when their price level of a fixed basket of goods and services (purchasing power) are the same.
According to the flexible-price monetary model which was developed by Frenkel and Mussa in 1976, it states that the prices of goods are flexible while the purchasing power parity (PPP) is always constant i.e the real exchange rate is always constant over a specific period of time.
Hence, if the Purchasing Power Parity (PPP) holds, even in the short run, then real exchange rates should remain constant over time.