Answer:
Ratio = 1/40
Explanation:
Since there are 80 people whose last name is Johnson and 3200 people in Dixville in total, our simplified ratio is given by:
80 / 3200
The greatest common factor (GCF) of 80 and 3200 is 80, so we simplify the ratio by dividing 80 and 3200 by 80:
(80 ÷ 80) / (3200 ÷ 80)
1/40
Therefore, the ratio of people named Johnson to the total population of Dixville 1/40.