Tim C. answered 10/14/17
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You're on the right track. First of all, your second line should be dividing by .72, not .75, since you said .72 in the original problem. Once you get that number, subtract the smaller number from the larger one. This is the overall loss because of the exchange rate change (you know it is a loss because the U.S. dollar amount went from a higher value to a lower one)