document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=442746>Question 442746</A>: <I><SPAN STYLE=\"word-break: break-all;\"> In a certain town, the ratio of children to adults is 3 to 7. What percentage of the town's population is adults?<BR>\n" );
document.write( "I took 3 divided by 7 to get approximately 43% and then subtracted that from 100 percent. But the answer is 70%. Why?? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #305430 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=305430\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> In a certain town, the ratio of children to adults is 3 to 7. What percentage of the town's population is adults?<BR>\n" );
document.write( "I took 3 divided by 7 to get approximately 43% and then subtracted that from 100 percent. But the answer is 70%. Why??<BR>\n" );
document.write( "-----------------<BR>\n" );
document.write( "3:7 is the same as 3x:7x<BR>\n" );
document.write( "----<BR>\n" );
document.write( "Equation:<BR>\n" );
document.write( "3x + 7x = 100%<BR>\n" );
document.write( "10x = 100%<BR>\n" );
document.write( "x = 10%<BR>\n" );
document.write( "----<BR>\n" );
document.write( "% of children =  3x = 30%<BR>\n" );
document.write( "% of adults = 7x = 70%<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" );