1 The scale of a map is 8 inch = 10 miles. If 2 cities are 3 inches apart on the map, how many miles are they from each other?

Answer 1

You can set up a proportion - just be sure your setup is consistent/logical. If not, your answer won't make sense.

Scale Actual

8"/10 mi = 3"/x mi

Cross-multiply: 8x = 30 -> x = 30/8 = 3 3/4 mi.

Makes sense because 3" is less than 1/2 of 8", so the actual miles are less than 1/2 of 10 mi.