document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=388958>Question 388958</A>: <I><SPAN STYLE=\"word-break: break-all;\"> There are two brothers and two sisters. in 10 years they will total 100 in their ages. How much will the total be in 7 years?<BR>\n" );
document.write( "i'm still convinced it's 88..can someone explain why it isn't 88 ? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #275399 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=275399\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> There are two brothers and two sisters. in 10 years they will total 100 in their ages. How much will the total be in 7 years?<BR>\n" );
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document.write( "Let their ages now be b,B and s,S<BR>\n" );
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document.write( "Equations:<BR>\n" );
document.write( "In 10 years:<BR>\n" );
document.write( "b+10 + B+10 + s+10 + S+10 = 100<BR>\n" );
document.write( "b+B+s+S = 60<BR>\n" );
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document.write( "In 7 years:<BR>\n" );
document.write( "b+7+B+7+s+7+S+7 = ?<BR>\n" );
document.write( "(b+B+s+S)+28 = ?<BR>\n" );
document.write( "60+28 = ?<BR>\n" );
document.write( "? = 88<BR>\n" );
document.write( "===============<BR>\n" );
document.write( "88 is correct<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" );