Part A. The euro has depreciated by 30% against the U.S. dollar. How much has the dollar appreciated against the euro?
Part B. In the meantime, the U.S. dollar has appreciated by 10% against the Japanese yen. How much has the yen depreciated against the dollar?
Part C. Has the yen appreciated or depreciated against the euro? How much?
Part D. Has the euro appreciated or depreciated against the yen? How much?