Celine is 6 years younger than her sister Cindy. She is also one third as old as Cindy. How old is Celine? How old is Cindy?

Cindy could be 18 years old and Celine could be 6 years old.

Step-by-step explanation:

First, times 6 and 3. The answer is 18. So one third of 18 is 6. For example, 6+6+6=18.