document.write( "Question 347931: A father is 10 years older than three times his son's age.
\n" ); document.write( "The sum of their ages is 58. What is the difference between the father's age and his son's?
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Algebra.Com's Answer #248752 by hellen(1)\"\" \"About 
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Son's age is x.
\n" ); document.write( "Dad's age would be 3x+10 because he is 10 years older than 3 times the son's age.
\n" ); document.write( "The total age is 58.\r
\n" ); document.write( "\n" ); document.write( "Therefore: x+3x+10=58
\n" ); document.write( " 4x+10=58 (add x+3x)
\n" ); document.write( " 4x=48 (subtract 10 from each side)
\n" ); document.write( " x=12 (divide each side by 4)\r
\n" ); document.write( "\n" ); document.write( "Therefore the son is 12 years old. The dad is 46 years old. The difference in their ages is 34.
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