Question 337043
Jarilyn is running around a path in the shape of a rectangle.

This means we are dealing with the perimeter if a rectangle.

The formula for finding the perimeter of a rectangle is P = 2L + 2W, where L is the length and w is the width.

Let P = perimeter

We are told that the length is twice as long as the width but we have no idea what the width is.

Let width = x

Let length = 2x

Let P = 42

We plug that into the perimeter formula above.

P = 2L + 2W

42 = 2 times (2x) + 2x

42 = 4x + 2x

42 = 6x

42/6 = x

7 = x

The width of the rectangular path is 7 and the length is twice 7 or 14.