Kate Brown Ch 11 Q6

One topic that I found interesting was the fact that their is a system to predict the changes in value of currency. I understand that this is used to make sure that when on nation's currency is exchanged for another you receive an amount that has the same value as what you originally had. However, I find it interesting that their are still exchange rates that are not balanced. For example, one US dollar should be worth about 3.5 Chinese renminbi when it is actually work more than double that.