document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=154831>Question 154831</A>: <I><SPAN STYLE=\"word-break: break-all;\"> If Martin was four times as old as Gary 8 years ago and if Martin will be twice as old as Gary 8 years hence, find their ages. </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #113992 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=113992\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> <BR>\n" );
document.write( "Let m - Martin's age now; Let g = Gary's age now<BR>\n" );
document.write( ":<BR>\n" );
document.write( "Write an equation for each statement:<BR>\n" );
document.write( "\"If Martin was four times as old as Gary 8 years ago\"<BR>\n" );
document.write( "(m-8) = 4(g-8)<BR>\n" );
document.write( "m - 8 = 4g - 32<BR>\n" );
document.write( "m - 4g = -32 + 8<BR>\n" );
document.write( "m - 4g = -24<BR>\n" );
document.write( ":<BR>\n" );
document.write( "\" and if Martin will be twice as old as Gary 8 years hence,\"<BR>\n" );
document.write( "(m+8) = 2(g+8)<BR>\n" );
document.write( "m + 8 = 2g + 16<BR>\n" );
document.write( "m - 2g = 16 - 8<BR>\n" );
document.write( "m - 2g = 8<BR>\n" );
document.write( ":<BR>\n" );
document.write( "Subtract the 1st equation from the above equation:<BR>\n" );
document.write( "m - 2g = 8<BR>\n" );
document.write( "m - 4g = -24<BR>\n" );
document.write( "--------------subtraction eliminates m<BR>\n" );
document.write( "0 + 2g = +32<BR>\n" );
document.write( "g = <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=32%2F2 ALIGN=MIDDLE  ALT=\"32%2F2\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "g = 16 yrs Gary's age now<BR>\n" );
document.write( ":<BR>\n" );
document.write( "Use the equation; m - 2g = 8 to find m<BR>\n" );
document.write( "m - 2(16) = 8<BR>\n" );
document.write( "m - 32 = 8<BR>\n" );
document.write( "m = 8 + 32<BR>\n" );
document.write( "m = 40 yrs is Martin's age now<BR>\n" );
document.write( ":<BR>\n" );
document.write( ":<BR>\n" );
document.write( "Check solution in the statement:<BR>\n" );
document.write( "\"If Martin was four times as old as Gary 8 years ago and if Martin will be twice as old as Gary 8 years hence, find their ages.\"<BR>\n" );
document.write( "40 - 8 = 4(16-8)<BR>\n" );
document.write( "and<BR>\n" );
document.write( "40 + 8 = 2(16+8)\r<BR>\n" );
document.write( "<BR>\n" );
document.write( "<BR>\n" );
document.write( "\n" );
document.write( " </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );