Answer:
The width of the rectangle is 15 inches.
Explanation:
Take I as the length of the rectangle and w as its width. Use the relationship between the length and the width and express the length in terms of the width.
The perimeter of a shape is the sum of its sidelength, use this imformation to write a expression for the perimeter of the rectangle;
Now, replace l for the expression in terms of the width and P for the given perimeter, then solve for w:
The width of the rectangle is 15 inches.