document.write( "Question 261073: This year John's mother is exactly three times as old as he is. Last year, their ages added up to 50. How old is John?\r
\n" ); document.write( "\n" ); document.write( "5x3 = 45, John's mother must be 45 and John is 5 5+45 = 50 is that correct?
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Algebra.Com's Answer #192370 by mananth(16949)\"\" \"About 
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Let John’s age be x\r
\n" ); document.write( "\n" ); document.write( "Mothers age = 3x\r
\n" ); document.write( "\n" ); document.write( "Last year john’s age = x-1\r
\n" ); document.write( "\n" ); document.write( "Mother’s age last year = 3x-1\r
\n" ); document.write( "\n" ); document.write( "The sum of their ages last year was 50\r
\n" ); document.write( "\n" ); document.write( "x-1 + 3x-1 = 50\r
\n" ); document.write( "\n" ); document.write( "4x-2=50
\n" ); document.write( "4x=52
\n" ); document.write( "X=13 = John’s age\r
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\n" ); document.write( "\n" ); document.write( "M Ananth___________ mananth@hotmail.com\r
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