if a playground is a rectangle that is enclosed by a exactly 140 ft of fence and the width is ten ft shorter then its length what is the width and length of the rectangle

Answer 1

Set up equations as follows:
Let the length be x,
the width is equal to length-10
=x-10

The perimeter, 140 ft
=2(x + (x-10))
or
2(x+(x-10))=140

Solve for x = length and calculate (x-10) = width.

Answer 2

the width is 30 and the lenghth is 40