Answer:
Liza is 17 years old.
Explanation:
Ley 'x' be the age of Liza's younger sister
- As Liza’s age is two more than thrice the age of her younger sister
so the equation of Liza's age will be:
Liza's age = 3x+2
As x = 5 years is Liza's younger sister age
so
Liza's age = 3(5)+2
= 15+2
= 17 years
Therefore, Liza is 17 years old.