Solution: Let Fangfang be X years old this year.
3.25 times -3X = 3 or 3.25 times =3X+3.
[Note: (father's age)-(mother's age) =3 or (father's age) = mother's age) +3]
Solution: X= 12 (years old)
A: Fangfang is 12 years old this year.
count
3÷(3.25-3)
=3÷0.25
= 12 (years old)
A: Fangfang is 12 years old this year.