document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=788945>Question 788945</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Please help me form the equation for this question<BR>\n" );
document.write( "Greg is 3 times David's age, how old are Greg and David now if in 10 years time the sum of their ages will be 72<BR>\n" );
document.write( "Thankyou Cromlix for your help </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #478674 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=478674\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Greg is 3 times David's age, how old are Greg and David now if in 10 years time the sum of their ages will be 72<BR>\n" );
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document.write( "Equations:<BR>\n" );
document.write( "g = 3d<BR>\n" );
document.write( "g+10 + d+10 = 72<BR>\n" );
document.write( "------<BR>\n" );
document.write( "Substitute for \"g\" and solve for \"d\":<BR>\n" );
document.write( "3d+10 + d+10 = 72<BR>\n" );
document.write( "4d + 20 = 72<BR>\n" );
document.write( "4d = 52<BR>\n" );
document.write( "d = 13 (David's age now)<BR>\n" );
document.write( "----<BR>\n" );
document.write( "g = 3d<BR>\n" );
document.write( "g = 39 (Greg's age now)<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" );