If the price of former Chairman of the U.S. Federal Reserve Alan Greenspan's memoir, The Age of

Question:

If the price of former Chairman of the U.S. Federal Reserve Alan Greenspan's memoir, "The Age of Turbulence," is listed on Amazon.ca as C$26.33, but costs just US$23.10 on Amazon.com, what exchange rate does that imply between the two currencies?

Exchange Rate
The value of one currency for the purpose of conversion to another. Exchange Rate means on any day, for purposes of determining the Dollar Equivalent of any currency other than Dollars, the rate at which such currency may be exchanged into Dollars...