Hi,

let l be the length of the rectangle and

let w be the width of the rectangle. Then

the perimeter of a rectangle is calculated by:

p = 2l + 2w

You know that l = 2w - 5 and that p = 230'

Now substitute these term into the first equation:

2(2w - 5) + 2w = 230. Expand the bracket

6w - 10 = 230

6w = 240

w = 40 feet and l = 75 feet

p = 2*40 + 2*75

p = 80 + 150 = 230 feet. Seems to be OK

EB