Question 4848
perimeter = 2L+2W
160=2L+2W
Divide by 2
80=L+W

Additionally we know that 
1/4L=2W
Multiply by 4
L=8W

So we can substitute that in:
80=8W+W
80=9W
8.88=W

L=8W
L=8(8.88)
L=71.77

160=2(71.11)+2(8.88)

Pretty unusual numbers for this kind of math problem...