The rectangle on the right is a scaled copy of the rectangle on the left. Identify the scale factor. Express your answer as a whole number or fraction in simplest form.

8
16
12
24

The scale factor can be found by dividing the length of corresponding sides of the two rectangles. The length of the corresponding sides are 8 and 24.

So, the scale factor is 24/8 = 3.

Therefore, the scale factor is 3.