document.write( "Question 975576: Lisa is three times as old as Maggie. The difference in their ages is 12 years. What are their ages?
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Algebra.Com's Answer #597297 by MathLover1(20850) $\"\"$ $\"About$

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\n" ); document.write( "let Lisa's age be $\"x\"$ and Maggie's age $\"y\"$ \r
\n" ); document.write( "\n" ); document.write( "given:\r
\n" ); document.write( "\n" ); document.write( "Lisa is three times as old as Maggie. \r
\n" ); document.write( "\n" ); document.write( " $\"x=3y\"$ ..........eq.1\r
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\n" ); document.write( "\n" ); document.write( "The difference in their ages is $\"12\"$ years.\r
\n" ); document.write( "\n" ); document.write( " $\"x-y=12\"$ .........eq.2.....substitute $\"x\"$ from eq.1\r
\n" ); document.write( "\n" ); document.write( " $\"3y-y=12\"$ \r
\n" ); document.write( "\n" ); document.write( " $\"2y=12\"$ \r
\n" ); document.write( "\n" ); document.write( " $\"highlight%28y=6%29\"$ \r
\n" ); document.write( "\n" ); document.write( "now, go to eq.1 and find $\"x\"$ \r
\n" ); document.write( "\n" ); document.write( " $\"x=3y\"$ ..........eq.1\r
\n" ); document.write( "\n" ); document.write( " $\"x=3%2A6\"$ \r
\n" ); document.write( "\n" ); document.write( " $\"highlight%28x=18%29\"$ \r
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\n" ); document.write( "\n" ); document.write( "so, Lisa is $\"18\"$ years old and Maggie is $\"6\"$ years old\r
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