Question 787093
Width = x
Length = 4x - 6
Perimeter = 2*width + 2*length
488 = 2(x) + 2(4x - 6)
488 = 2x + 8x - 12
Collect like terms
10x = 488 + 12
10x = 500
x = 50 
Width = 50 yards
Length = 194 yards.
Hope this helps.
:-)