document.write( "Question 1087282: If David is 6 & his sister is half his age when David is 100 how old is his sister \n" ); document.write( "
Algebra.Com's Answer #701545 by Fombitz(32388)\"\" \"About 
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His sister is then \"S=6%2F2\"
\n" ); document.write( "So then add the difference between 100 and 6 to her current age, so she'll be,
\n" ); document.write( "\"6%2F2%2B%28100-6%29\"
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