document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=246731>Question 246731</A>: <I><SPAN STYLE=\"word-break: break-all;\"> ann's age is seven-tenths of bill's age.In 4 years ann's age will be eight-elevenths of bill's age.How old is bill now?<BR>\n" );
document.write( "28,33,40,or 68 </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #180138 by </B><A HREF=/tutors/aboutme.mpl?userid=stanbon><B>stanbon(75887)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=stanbon><IMG SRC=http://www.algebra.com/images/aboutme-small.gif BORDER=0 alt=\"About Me\" VALIGN=MIDDLE></A>&nbsp;<IMG SRC=http://www.algebra.com/images/nopicture.jpg><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=180138\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> ann's age is seven-tenths of bill's age.In 4 years ann's age will be eight-elevenths of bill's age.How old is bill now?<BR>\n" );
document.write( "28,33,40,or 68<BR>\n" );
document.write( "------------<BR>\n" );
document.write( "Let ann be \"a\".<BR>\n" );
document.write( "Let bill = \"b\".<BR>\n" );
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document.write( "a = (7/10)b<BR>\n" );
document.write( "(a+4) = (8/11)(b+4)<BR>\n" );
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document.write( "Substitute for \"a\" and solve for \"b\":<BR>\n" );
document.write( "(78/10)b + 4 = (8/11)(b+4)<BR>\n" );
document.write( "Multiply thru by 110 to get:<BR>\n" );
document.write( "11*7b + 440 = 8*10(b+4)<BR>\n" );
document.write( "77b + 440 = 80b + 320<BR>\n" );
document.write( "3b = 120<BR>\n" );
document.write( "b = 40 (Bill's age)<BR>\n" );
document.write( "==================================<BR>\n" );
document.write( "Cheers,<BR>\n" );
document.write( "Stan H.<BR>\n" );
document.write( " </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );