A certain book is for sale in both Belize and Brazil. In Belize, it sells for 80.39 Belize dollars. In Brazil, it sells for 63.6
5 Brazilian reals. The exchange rate of US dollars to Belize dollars is 1:1.9246, and the exchange rate of US dollars to Brazilian reals is 1:1.7880. When converted into US dollars, which country sells the book at a more expensive price, and how much more expensive is it? Round all currency values to two decimal places.
For this case, the first thing we must do is define variables: x: number of pillowcases y: number of sheets We now write the system of equations: 2x + 5y = 40 x = 2y Solving the system we have: x = 8.9 y = 4.4 Answer: The maximum number of pillowcases she could have purchased is: x = 8 (spent less than $ 40)