Answer: Mother is 27 years old now.
Explanation:
Use x as a substitute.
Mother = 3x Daughter = x
In 9 years : Mother = 3x + 9 Daughter = x + 9
It is given that the mother will be 2 times as old as the daughter.
3x + 9 = 2 (x + 9)
3x + 9 = 2x + 18
- 9
3x = 2x +9
-2x
x = 9
So, now, 3x will equal 3(9) = 27
Mother is 27 years old.