SOLUTION: Three years ago a father wa s four times as old as his daughter is now.the product of their present ages is 430.calculate the present age of the daughter

Let x be the daughter present age;

then the father's present age is  (4x+3).


We are given that


    x*(4x+3) = 430.     (*)


The solution is obvious and you can guess it in 4 seconds:  x= 10.


ANSWER.  Daughter is 10 years old.