# Carlos is 8 years older than Maria. 4 years ago maria was two thirds as old as Carols. How old are they?

##### 1 Answer

Jul 7, 2016

Maria is

#### Explanation:

I call the age of Carlos today

The first relationship is

the second relationship is that

I substitute the first in the second

multiplying by 3 both sides

and

Just to verify, Carlos is 8 years older of Maria (he is 36 and Maria is 28) and four years ago Maria was 24 that is two third of the age of Carlos.