Question

The scale of a map is 1 cm and 78 km what is the actual distance between two towns that are 3 cm apart on the map

Answer 1

We can solve this problem, if we use the rule of three.
x=the actual distance between these towns

1 cm----------------78 Km
3 cm----------------  x

1cm *x=3 cm * 78 Km
x=(3 cm * 78 Km) / 1cm=234 Km

Solution: 234 Km