document.write( "Question 1209586: Lena is twice as old as her sister Mia. Four years ago, the sum of their ages was 24. How old are Lena and Mia now? \n" ); document.write( "

Algebra.Com's Answer #849582 by josgarithmetic(39618) $\"\"$ $\"About$

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document.write( "             Age now          4 years ago\r\n" );
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document.write( "Lema          2x              2x-4\r\n" );
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document.write( "Mia            x               x-4\r\n" );
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document.write( "TOTAL                          24\r\n" );
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\n" ); document.write( " $\"%282x-4%29%2B%28x-4%29=24\"$ \r
\n" ); document.write( "\n" ); document.write( "-\r
\n" ); document.write( "\n" ); document.write( " $\"2x-4%2Bx-4=24\"$ \r
\n" ); document.write( "\n" ); document.write( " $\"3x-8=24\"$ \r
\n" ); document.write( "\n" ); document.write( " $\"3x=24%2B8\"$ \r
\n" ); document.write( "\n" ); document.write( " $\"3x=32\"$ \r
\n" ); document.write( "\n" ); document.write( " $\"x=32%2F3\"$ \r
\n" ); document.write( "\n" ); document.write( " $\"x=30%2F3%2B2%2F3\"$ \r
\n" ); document.write( "\n" ); document.write( " $\"x=10%262%2F3\"$ -this is about 10 years 8 months.\r
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\n" ); document.write( "\n" ); document.write( "Lena is 2x so $\"2%2810%2B2%2F3%29=20%2B4%2F3=21%261%2F3\"$ -which is 21 years 4 months. \n" ); document.write( "

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