Hi!
The perimeter is equal to
l + l + w + w = 62
The length is 3 feet longer than the width so...
w + 3 + w + 3 + w + w = 62
Simplify
4w + 6 = 62
4w + 6 - 6 = 62 - 6
4w = 56
4w/4 = 56/4
w = 14
14 + 3 = 17
The width is 14 and the length is 17.
Hope this helps! :)
-Peredhel