The scale on a map of the United States is 1 cm = 40 mi. If the distance between Albany, NY and Chicago, IL, on the map is 21 cm, what is the actual distance between the cities?
A. 840 mi
B. 804 mi
C. 800 mi
D. 840 cm
To find the actual distance between the cities, we need to use the scale to convert the distance on the map (21 cm) to the actual distance.
1 cm on the map = 40 miles in real life
Therefore:
21 cm on the map = 21 x 40 miles in real life
= 840 miles
So the answer is A. 840 mi.