Given:
Perimeter of a football field = 920 feet.
The width is 60 feet more than one-third of the length.
To find:
The dimensions of a football field.
Solution:
Let the length of the field be x.
Then, width =
We know that,
Subtract both sides by 120.
Multiply both sides by 3.
Divide both sides by 8.
Now,
Therefore, the length and width of the football field are 300 feet and 160 feet respectively.