Exchange rate - Wikipedia
https://en.wikipedia.org/wiki/Exchange_rate
OverviewThe retail exchange marketQuotationsExchange rate regimeExchange rate classificationFactors affecting the change of exchange rateFluctuations in exchange ratesPurchasing power of currencyIn finance, an exchange rate is the rate at which one currency will be exchanged for another currency. Currencies are most commonly national currencies, but may be sub-national as in the case of Hong Kong or supra-national as in the case of the euro. The exchange rate is also regarded as the value of one country's currency in rel…
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