Question 621585
So let us call the shorter side, i.e the width: 'x'
So each length is four times the width = 4x

The perimeter consists of two widths and two lengths and equals 50 inches.

So:
x+x+4x+4x=50

solve for x:

10x = 50 
to find x divide both sides by 10:

10x/10 = 50/10
x=5

So width equals 5 in and length is four times this i.e. 4x5=20

To check: 5+5+20+20=50 !!!!