The problem provides the scale as 1 inch: 4 yards. This means that 4 yards of the real world size corresponds to 1 inch on the scale drawing.
Given that the actual width of the soccer field in the park is 60 yards, we can calculate the width of the field in the drawing using the given scale.
Following the scale of 1 inch: 4 yards, we can figure out the size on the drawing by dividing the actual size by the scale ratio; in this case:
Width on drawing = Actual size / Scale Ratio
Thereby,
Width on drawing = 60 yards / 4 = 15.0 inches
So, the width of the soccer field in Edgar's scale drawing is 15 inches.