Question 909381
I'm glad to help you. :)

let the wigth =x
then the length =2x
 
You can get
2·(2x+x)=60
2·(2x+x)÷2=60÷2
2x+x=30
  3x=30
   x=10


So 2x=2×10=20


The width of the garden is 10 feet, the length is 20 feet and the area is 200 square feet.