Answer:
son - 10
father - 40
Let x be the son's age, y be the father's age, then.
4x = y
x^2 - 60 = y
4x = x^2-60
x^2-4x-60=0
(x-10) (x+6)=0
x is positive so x = 10 and y = 40
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Answers & Comments
Answer:
son - 10
father - 40
Let x be the son's age, y be the father's age, then.
4x = y
x^2 - 60 = y
4x = x^2-60
x^2-4x-60=0
(x-10) (x+6)=0
x is positive so x = 10 and y = 40