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by fallingfrog 1480 days ago
This is an interesting observation! If you follow that train of thought, it might be possible for there to be a situation where in the United States, you can trade one dollar for .8 Euros, and in Europe, you trade one Euro for .8 dollars. In that case there is no single number for exchange rate. This could be the case because in order to spend your US dollars from Europe, you would have to travel to the USA, buy something, and then import it back, and vica versa. So how do exchanges quote a single number for exchange rate?