Answer:
The scale of a map tells you the relationship between the distance on the map and the actual distance in real life. In this case, the scale of the map is 1 inch : 6 miles, which means that 1 inch on the map represents 6 miles in real life.
To find out how many inches on the map 78 miles represents, you can use the following formula:
distance on the map = distance in real life / scale
So in this case:
distance on the map = 78 miles / 6 miles/inch
distance on the map = 78/6 inches
So 78 miles from the airport will be 13 inches on the map.