Question

an architect designs a rectangular window such that the width of the window is 40 com less than the height. If the perimeter of the window is 500 cm, what are the widths and heights?

Answer 1

2(w + w+40) = 500

Answer 2

2 h + 2 w = 400

h + w = 200

w + 40 + w = 200

2 w = 160

w = 80

h = 120

Answer 3

I used 400, use 500