Xiaoxiao's mother is 45 years old and Xiaoxiao 15 years old. How old is Xiaoxiao?
Xiaoxiao's mother is 45 years old, Xiaoxiao 15 years old and Xiaoxiao 10 years old. Eight years ago, Xiaoxiao's mother was five times older than Xiaoxiao. The age difference between them is 45- 15=30 years old. Age problem: The age difference between them is a constant age problem-a typical application problem. Cong Cong's age is 30÷(4- 1)=30÷3= 10 years old.