Exchange rates are quoted between two currencies at which one currency can be exchanged for another between nations or economic zones. It is used to determine the value of various currencies concerning each other and it is important in determining trade and capital flow dynamics.

     Remark: Fluctuations can occur whenever the values of either of the two currencies have changed. It is constantly related to supply and demand, which refers to several interrelated factors, including monetary policy, inflation rates, and the conditions involved with the political and economic environment.