1. On August 8, 2000, Zimbabwe changed the value of the Zimbabwe dollar from Z$38∕US$ to Z$50∕US$.

(a) What was the original U.S. dollar value of the Zimbabwe dollar? What is the new U.S. dollar value of the Zimbabwe dollar?

(b) By what percentage has the Zimbabwe dollar devalued (revalued) relative to the U.S. dollar?

(c) By what percentage has the U.S. dollar appreciated

(depreciated) relative to the Zimbabwe dollar?