3. Butterbeer index - Use the theory of purchasing-power parity to fill in the blanks with a number or "NA" if the figure is not ascertainable from the information given. Explain your answers. (Hint: Think back to the Big Mac index and what the relationship between exchange rates and prices should be assuming purchasing-power parity) Exchange rate (per Hagrid Fluffy) Country Currency Price of Predicted Actual Butterbeer Hagrid Fluffy 5 Hermionia Galleon 80 70 Potterstan Sickle 60 10 Ronland Knut 100 20