Question 759458
Width = x
Length = 3x
Perimeter = 2*width + 2*length
  240     = 2(x) + 2(3x)
  240     = 2x + 6x
  240     = 8x
    x     = 240/8
    x     = 30
So, Width = 30ft and Length = 90ft.
Hope this helps.
:-)