Suppose the exchange rate between the Danish krone and the U.S. dollar is 7 DKK = $1 and the exchange rate between the Chilean peso and the U.S. dollar is 650 CLP = $1. 

a. Express both of these exchange rates in terms of dollars per unit of the foreign currency.
b. What should the exchange rate be between the Danish krone and the Chilean peso? Express the exchange rate in terms of 1 krone and in terms of 1 peso. 

c. Suppose the exchange rate between the krone and the dollar changes to 5 DKK = $1 and the exchange rate between the peso and the dollar changes to 700 CLP 5$1. For each of the three currencies, explain whether the currency has appreciated or depreciated against the other two currencies.