document.write( "Question 984157: Two Years ago, a boy was 5/4 as old as his sister, In 13 years he will be 10/9 as old as his sister. How Old is the boy? \n" ); document.write( "
Algebra.Com's Answer #604940 by josgarithmetic(39618)\"\" \"About 
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x, the sister
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\n" ); document.write( "\n" ); document.write( "\"system%28y-2=%285%2F4%29%28x-2%29%2Cy%2B13=%2810%2F9%29%28x%2B13%29%29\"
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