<PRE><B>Question 776905</B>
3 years ago a father was 4 times as old as his daughter is now. The product of their ages is 430. Calculate their present ages.
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F*D = 430
F-3 = 4(D-3)
F = 4D - 9
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D*(4D-9) = 430
4D^2 - 9D - 430 = 0
*[invoke solve_quadratic_equation 4,-9,-430]
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D = x
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Not an integer solution.
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