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trade currencies, you should have a firm understanding of currency quoting con- ventions, how forex transactions are priced, and the mathematical formulae required to convert one cur- rency into another.
Currency exchange rates are usually quoted using a pair of prices representing a “bid” and an “ask.” Similar to the manner in which stocks might be quoted, the “ask” is a price that represents how much you will need to spend in order to purchase a currency, and the “bid” is a price that represents the (lower) amount that you will receive if you sell the currency. The dif- ference between the bid and ask prices is known as the “bid-ask spread,” and it represents an inherent cost of trading – the wider the bid-ask spread, the more it costs to buy and sell a given currency, apart from any other commissions or transaction charges.,,,,,,,,,,,,,,,,,,,,,,