The perimeter of square A is 81 inches. The length of each side of square B is 1 inch less than the length of each side of square A. One side of square B is ___ inches in length.

Answer 1

Sq. A = X in, each side.
Sq. B = x-1 in, each side.

x+x+x+x = 81.
4x = 81
X = 20.25 in.
x-1 = 20.25 - 1 = 19.25 in.