a) You just returned from some extensive travelling throughout the Americas. You started your trip with $20,000 in your pocket. You spent 3.4 million pesos while in Chile and 16,500 bolivares in Venezuela. Then on the way home, you spent 47,500 pesos in Mexico. How many dollars did you have left by the time you returned to the U.S, given the following exchange rates? (Note: Multiple symbols are used to designate various currencies. For example, the U.S. dollar is notated as "$" or as "USD".

Country U.S $ Equivalent Currency per U.S. $

Chile ? 668.0001

Mexico 0.0777 ?

Venezuela ? 2.1473

b) You are planning a trip to Australia. Your hotel will cost you A$145 per night for seven nights. You expect to spend another A$2,800 for meals, tours, souvenirs, and so forth. How much will this trip cost you in U.S. dollars given the following exchange rates?

Country U.S $ Equivalent Currency per U.S. $

Australia 0.6707 1.4910

c) what conditions are necessary for absolute purchasing power parity (PPP) to exist? Is it realistic to believe PPP can exist within a country let alone across national borders?