There are 12 players on a new softball team total registration is $572 and they also need to spend 1,240 on equipment players raised $786 and to pay the rest off decide to sell candles for $9.50 how much candles does each player have to sell

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.