Question 567885
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Let the son's age is x years.

Then the father's age is 3x years,  (twice older means "three times old as") and the condition says that

x + 3x = 48.


Hence,  4x = 48  and x = {{{48/4}}} = 12.


<U>Answer</U>.  The son is 12 years old.  The father is 36 years old.
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