document.write( "Question 1022256: karen is twice as old as lori. three years from now, the sum of their ages will be 42. how aold is karen?
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Algebra.Com's Answer #637987 by ankor@dixie-net.com(22740)\"\" \"About 
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let k = Karen's present age
\n" ); document.write( "let L = Lori's
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\n" ); document.write( "Write an equation for each statement
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\n" ); document.write( " Karen is twice as old as Lori.
\n" ); document.write( "k = 2L
\n" ); document.write( " three years from now, the sum of their ages will be 42.
\n" ); document.write( "(k+3) + (L+3) = 42
\n" ); document.write( "k + L + 6 = 42
\n" ); document.write( "k + L = 42 - 6
\n" ); document.write( "k + L = 36
\n" ); document.write( "Replace k with 2L from the 1st statement
\n" ); document.write( "2L + L = 36
\n" ); document.write( "3L = 36
\n" ); document.write( "L = 36/3
\n" ); document.write( " L = 12 yrs is Lori's age
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\n" ); document.write( " how old is Karen?
\n" ); document.write( "k = 2(12)
\n" ); document.write( "k = 24 yrs is Karen's age
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\n" ); document.write( "Check this in the statement
\n" ); document.write( "\"three years from now, the sum of their ages will be 42.\"
\n" ); document.write( "(24 + 3) + (12 + 3) =
\n" ); document.write( "27 + 15 = 42 \n" ); document.write( "
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