document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1007748>Question 1007748</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Eighteen years ago the ratio of As age to B s age was 8:13. Their present ratios are 5:7. What is the present age of A? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #623594 by </B><A HREF=/tutors/aboutme.mpl?userid=ankor@dixie-net.com><B>ankor@dixie-net.com(22740)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=ankor@dixie-net.com><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/cgi-bin/show-face.mpl?user=ankor@dixie-net.com><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=623594\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\">  Eighteen years ago the ratio of As age to B s age was 8:13.<BR>\n" );
document.write( " Their present ratios are 5:7. What is the present age of A? <BR>\n" );
document.write( ":<BR>\n" );
document.write( "let x = the multiplier<BR>\n" );
document.write( "then<BR>\n" );
document.write( "5x = A's present age<BR>\n" );
document.write( "and<BR>\n" );
document.write( "7x = B's present age<BR>\n" );
document.write( ":<BR>\n" );
document.write( "18 years ago:<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=%28%285x-18%29%29%2F%28%287x-18%29%29 ALIGN=MIDDLE  ALT=\"%28%285x-18%29%29%2F%28%287x-18%29%29\"   DISABLED_style= \"max-width:90%; height:auto;\" > = <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=8%2F13 ALIGN=MIDDLE  ALT=\"8%2F13\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "cross multiply<BR>\n" );
document.write( "13(5x-18) = 8(7x-18)<BR>\n" );
document.write( "65x - 234 = 56x - 144<BR>\n" );
document.write( "65x - 56x = -144 + 234<BR>\n" );
document.write( "9x = 90<BR>\n" );
document.write( "x = 90/9<BR>\n" );
document.write( "x = 10 is the multiplier<BR>\n" );
document.write( "then<BR>\n" );
document.write( "A = 5(10)<BR>\n" );
document.write( "A = 50 yrs old now<BR>\n" );
document.write( ":<BR>\n" );
document.write( ":<BR>\n" );
document.write( "Confirm this solution, find B's age; 10*7 = 70yrs old<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=%28%2850-18%29%29%2F%28%2870-18%29%29 ALIGN=MIDDLE  ALT=\"%28%2850-18%29%29%2F%28%2870-18%29%29\"   DISABLED_style= \"max-width:90%; height:auto;\" > = <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=32%2F52 ALIGN=MIDDLE  ALT=\"32%2F52\"   DISABLED_style= \"max-width:90%; height:auto;\" > = <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=8%2F13 ALIGN=MIDDLE  ALT=\"8%2F13\"   DISABLED_style= \"max-width:90%; height:auto;\" > </SPAN>\n" );
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