Question 118137
Roni's = x
Betty's age = 2x
~~~~
Roni's = x - 2
Betty's age = 3(x - 2) = 3x - 6
~~~~
2x - 2 = 3x - 6
-2 = x - 6
4 = x
~~~~
Roni's = x = 4 years
Betty's age = 2x = 8 years