A field is a rectangle with a perimeter of 1140 feet. The length is 400 feet more than the width. Find the width and length of the rectangular field.

Width = 85

Length = 485

Step-by-step explanation:

The width will be x, and the length will be x + 400, since it is 400 more than the width.

We know that the perimeter of a rectangle can be found using the equation 2w + 2l.

We plug in the values we have found.

2 (x) + 2 (x+400) = 1140

4x + 800 = 1140

4x = 340

x = 85

Now we know the width, since it is simply x. To find length all we have to do is add 400.

400 + 85 = 485