Stanley measured a county park and made a scale drawing. The picnic area, which is 120 yards long in real life, is 270 inches long in the drawing. What scale did Stanley use?

9 inches:___ yards

To find the scale, we need to determine how many inches represent one yard in the drawing.

First, let's convert 120 yards to inches:
120 yards * 36 inches/yard = 4320 inches

Now we can calculate the scale:
270 inches in the drawing / 4320 inches in real life = 1/16

Therefore, the scale Stanley used is 9 inches: 1/16 yards.