To find: the present age of the daughter.
The given condition is “A father is four times as old as his daughter.”.
A father is four times as old as his daughter.
Let the daughter present age be .
Therefore, father’s age is .
According to the question, the future age of daughter is three times the sum of actual age and 6, which is equal to more than 6 years to the father’s age.
Therefore, the present age of the daughter is
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