Question

If two cities that are 750 mi. apart are located 15 in. apart on a map of the United States, what is the scale of the map?

Answer 1

In order to find the scale of the map, let's first convert 750 miles to inches.

If one mile is 63360 inches, we have that 750 miles is 47,520,000 inches.

Now, to find the scale, we just need to divide the real distance by the distance in the map:

$\frac{47520000}{15}=3168000$

So the scale is 1 : 3,168,000