Question

The scale on a map is 1 cm : 6 km. If two cities are 12 cm apart on the map, what is the actual distance between the cities?

Answer 1

its 72 km apart you multiply 12 by the scale which is 1:6 so basically just 6 

Answer 2

72 km 
you can solve this by doing cross multiplication so 1cm/6km= 12cm/? 
12 X 6= 72 
72/1=72 
so the distance is 72 km