The euro depreciates 17% against the dollar. How much has the dollar appreciated against the euro?

Question

Quizplus · Accepted Answer

To find out how much the dollar appreciated against the euro, we need to calculate the percentage increase of the dollar relative to the euro. 
If the euro depreciated by 17%, it means it is now worth 83% (100% - 17%) of its original value. 
To find out how much the dollar appreciated, we need to take the reciprocal of 0.83 (since it is now worth 83% of its original value) and subtract 1: 
(1/0.83) - 1 = 0.2048 or 20.48%
Therefore, the answer is D, 20.48%.

The Euro Depreciates 17% Against the Dollar