On the map of 1:20000 scale, the distance between towns a and B is 3cm. If on the map of 1:25000 scale, how many cm is the distance between towns a and B?

On the map of 1:20000 scale, the distance between towns a and B is 3cm. If on the map of 1:25000 scale, how many cm is the distance between towns a and B?

Solution: let a and B be x cm apart
3:x=1:20000
x=60000
Solution: on the map of 1:25000 scale, the distance between towns a and B is YCM
y:60000=1:25000
25000 y=60000
y =2.4
A: on the 1:25000 scale map, towns a and B are 2.4cm apart