Question

The scale of a map is given as 1.30000000 Two cities are 4 cm
apart on the map Find the actual distance between them.​

Answer 1

$\frac{1}{30000000} = \frac{4}{x} \\ = > x = 4 \times 30000000cm \\ = > x = 4 \times 30km \\ = > x = 120km$

This is your answer.