document.write( "Question 1061388: Laura is four years less than twice her son's age. The sum of their ages is 119. How old is Laura? How old is her son? \n" ); document.write( "

Algebra.Com's Answer #676164 by ikleyn(52784) $\"\"$ $\"About$

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\n" ); document.write( "Laura is four years less than twice her son's age. The sum of their ages is 119. How old is Laura? How old is her son?
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document.write( "L = 2S - 4,   (1)\r\n" );
document.write( "L + S = 119.  (2)\r\n" );
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document.write( "From (1), substitute L = 2S - 4 into (2), replacing L. You will get\r\n" );
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document.write( "(2S-4) + S = 119.\r\n" );
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document.write( "3S = 119 + 4 = 123.\r\n" );
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document.write( "S = 41.              (son)\r\n" );
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document.write( "L = 2*41 - 4 = 78.   (Lora)\r\n" );
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