Foreign exchange. You just came back from Canada, where the Canadian dollar was worth £0.43. You still have C$200 from your trip and could exchange them for pounds at the airport, but the air- port foreign exchange desk will only buy them for £0.40. Next week, you will be going to Mexico and will need pesos. The airport foreign exchange desk will sell you pesos for £0.055 per peso. You met a tourist at the airport who is from Mexico and is on his way to Canada. He is willing to buy your C$200 for 1500 New Pesos. Should you accept the offer or cash the Canadian dollars in at the airport? Explain.