20 cups
4 rows of 5 containing the 3 inch cups and 5 columns of 4 containing the 3 inch cups
Hey There!! ~
The answer to this is: 60 cups. Because, First you need to find the area of the box which would be
12in x 15in =180in
The second step would be to divide the area of the box by how tall the cups are .
180/3 = 60
Hope It Helped!~
[tex]ItsNobody[/tex]~ (`~*>.^UwU^.<`~*)