The perimeter of the front of a 10-ounce cereal box is 40 inches. The height is 4 inches more than the width. What are the width and height of the front of the box?
Perimeter = H+H+W+W and H=4+W
SO
40 = 4+W + 4+W +W+W
40=8+4W Solve for W then H = 4+W