The distance between two cities on a map is cm and the actual distance between them is km. If the distance between two other cities on the same map is cm, determine the real distance between them.
Step 1: Convert the units to be the same.
There are in , so multiply the number of kilometres by to convert to centimetres.
Step 2: Find the drawing scale for the map.
Step 3: Use the drawing scale to find the real distance between the two other cities.
Step 4: Convert to distance to kilometres.
There are in , so divide the number of centimetres by to convert to kilometres.