Respuesta :

20 because 10+10=20 and 20+20=40 and 20+40=60
aytan

Answer:

20 feet

Step-by-step explanation

Here's what you know.

Perimeter-60 feet

width is 10 feet less than the length.

If the length is 20, the width has to be 10. 20+10+10+20 equals 60. Hope this helps-Brainliest plz