document.write( "Question 1099711: How would I solve the following problem? Mary is five years older than Sue. Twenty years ago, Sue was half as old as Mary is now. How old is Mary now? \n" ); document.write( "
Algebra.Com's Answer #714152 by Fombitz(32388)\"\" \"About 
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Convert the sentences to algebraic equations and then solve them.
\n" ); document.write( ".
\n" ); document.write( ".\r
\n" ); document.write( "\n" ); document.write( "\"M=S%2B5\"
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\n" ); document.write( "Twenty years ago,
\n" ); document.write( "\"S-20=%281%2F2%29%28M-20%29\"
\n" ); document.write( "\"2S-40=M-20\"
\n" ); document.write( "\"M-2S=-20\"
\n" ); document.write( "Substitute from above,
\n" ); document.write( "\"%28S%2B5%29-2S=-20\"
\n" ); document.write( "\"-S%2B5=-20\"
\n" ); document.write( "\"-S=-25\"
\n" ); document.write( "\"S=25\"
\n" ); document.write( "Now use either equation to solve for M.
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