I need help with 13 on both pictures. The first picture is the answer and the second picture is the question.

Sandy is ordering bread rolls for her party,she wants 3/5 of the rolls to be whole wheat. what other factions can represent part of the rolls that will be whole wheat? shade the models to show your work.

Solve for n? [tex]z = \frac{3}{4} mn[/tex]

Twelve less than a number is at most 20