Mother’s age today is thrice as her daughter’s. After 10 years it would be just double. How old is the daughter today ?

8 years
9 years
10 years
11 years

Correct Answer: 10 years

Explanation:

Let the age of the daughter today be ‘x’ years.
Mother’s age today = 3x years
After 10 years, we have
3x + 10 = 2(x + 10)
x = 10 years.

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