Suppose A traveled x kilometers, then B traveled (480-x) kilometers.
According to the meaning of the question: x: (480-x) = 1: 9.
To solve this ratio, X=48.
480 - X=480 - 48=432
A: A traveled 48 kilometers and B traveled 432 kilometers.
Answer: The actual length is: 12cmx500 = 6000cm = 60m.
The actual width is 8cmx500 = 4000cm = 40m.