2. mrs. cruz purchased three kinds of meat at the grocery store. the weights are shown in the table. what was the total weight of the meat she purchased? a. 55.8 pounds b. 7.12 pounds c. 4.24 pounds d. 0.712 pounds

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.