How can we determine fixed exchange rate, Macroeconomics

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How can we determine fixed exchange rate

If a nation has a fixed exchange rate (say against a specific currency), the government or central bank may change this fixed exchange rate. Assume that Hong Kong is our home country and that Hong Kong dollar (HKD) is fixed against USD at the exchange rate 7.8 HKD/USD (direct notation). If central bank in Hong Kong changes this exchange rate to say 8.2 HKD/USD it makes foreign currency more costly and HKD cheaper. In this case we say that HKD has been devalued. Though, if exchange rate is changed to say 8.6 HKD/USD we say that HKD has been revalued.

1988_The euro against the US dollar.png

As an example, Figure above illustrates the exchange rate between USD and euro with the euro as the base currency.

 

 


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