The answer is Purchasing power parity or the PPP. PPP is a hypothesis which expresses that trade rates between monetary forms are in balance when their acquiring power is the same in each of the two nations. Relative acquiring power equality is a financial hypothesis which predicts a connection between the swelling rates of two nations over a predetermined period and the development in the conversion standard between their two monetary forms over a similar period. It is a dynamic rendition of the total PPP hypothesis.
