document.write( "Question 1146172: 4 years ago i was half as old as my father. Six years hence, I will be three fifths as old as he. How old am I now? \n" ); document.write( "
Algebra.Com's Answer #767447 by josgarithmetic(39617)\"\" \"About 
You can put this solution on YOUR website!
Ages s and f\r
\n" ); document.write( "
\n" ); document.write( "\n" ); document.write( "\"system%28s-4=%281%2F2%29%28f-4%29%2Cs%2B6=%283%2F5%29%28f%2B6%29%29\"\r
\n" ); document.write( "
\n" ); document.write( "\n" ); document.write( "\"2s-8=f-4\"
\n" ); document.write( "\"f=2s-8%2B4\"
\n" ); document.write( "\"f=2s-4\"\r
\n" ); document.write( "
\n" ); document.write( "
\n" ); document.write( "\n" ); document.write( "subst into secnd eq
\n" ); document.write( "\"5s%2B30=3f%2B18\"
\n" ); document.write( "\"5s-3f=18-30\"
\n" ); document.write( "\"5s-3%282s-4%29=-12\"
\n" ); document.write( "\"5s-6s%2B12=-12\"
\n" ); document.write( "\"-s=-24\"
\n" ); document.write( "\"highlight%28s=24%29\"\r
\n" ); document.write( "
\n" ); document.write( "
\n" ); document.write( "
\n" ); document.write( "
\n" ); document.write( "
\n" ); document.write( "
\n" ); document.write( "
\n" ); document.write( "\n" ); document.write( "------\r
\n" ); document.write( "
\n" ); document.write( "\n" ); document.write( "Is \"i\" and \"I\" the same person?
\n" ); document.write( "
\n" );