Question

the scale of a map is 1 ratio 4000000 what is the actual distance between the two towns if they are 5 cm apart on the map

Answer 1

1:4000000 means if the town's are 1 cm apart on the map, they are 4000000 cm = 4000m = 4km

If the town's are 5 cm apart, the are 4*5 = 20km apart in real life