year younger than Chris. Joseph and Chris are twins. M. old as Liana. Joseph is 8 years old. Tashari is older than 1. Who is the oldest child in the family? 2. How old is Liana? 3. Which child is nine years old? 4. How old is Jada? 5. When Mark is 20 years old, how old will Liana be? 6. What is the sum of Jada's and Joseph's age?