A rectangular dog pen is 6 feet longer than the width. The perimeter of the pen is 48 ft. Find the length and the width of the pen.

Answer 1

Perimeter = (2) L + (2) W = 48

L = W + 6

substitute the equation for L in the Perimeter equation and solve for W

(2)(W+6) + (2)W = 48

2W + 12 + 2W =48

4W d+ 12 = 48

4W = 36

W = 9

Therefore, L = 15