First let’s go on a trip! you come into some money and decide to go to canada where the exchange rate is 1.04 canadian dollars to 1 us dollar. you have $1 us to take with you. what is the equivalent value in canadian dollars?

Set $r$ is a set of rectangles such that (1) only the grid points shown here are used as vertices, (2) all sides are vertical or horizontal and (3) no two rectangles in the set are congruent. if $r$ contains the maximum possible number of rectangles given these conditions, what fraction of the rectangles in set $r$ are squares? express your answer as a common fraction.