On a map, 1 cm represents 30 km. Two cities on the map are 2.3 cm apart.

How far apart are the actual cities?

A. 2.3 km

B. 13 km

C. 30 km

D. 69 km

D. 69 Km

Step-by-step explanation:

Scaling

Maps usually represent real areas on the field, but since they cannot fit in pieces of paper, we use scales where sizes and distances are all proportional to the real measurements.

On the map of the question, we know 1 cm represents 30 Km. It means that we can know approximate real distances by measuring the distances on the paper or blueprints.

Two cities are 2.3 cm apart on the map, it means that they are really 2.3*30 = 69 Km apart