document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=925220>Question 925220</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Okay this one got me. \r<BR>\n" );
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document.write( "Carlo's age is 7/10 of mark's. Four years from now, carlo's age will be 8/11 of mark's age. How is carlo?\r<BR>\n" );
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document.write( "This is my equation.<BR>\n" );
document.write( "X is carlo<BR>\n" );
document.write( "7/10x is mark\r<BR>\n" );
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document.write( "X +4 = 8/11(7/10x + 4)\r<BR>\n" );
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document.write( "Am i on the right track? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #561401 by </B><A HREF=/tutors/aboutme.mpl?userid=rothauserc><B>rothauserc(4718)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=rothauserc><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=rothauserc><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=561401\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> let x be Carlo's age and y be Mark's age, then we have two equations<BR>\n" );
document.write( "x = 7y/10<BR>\n" );
document.write( "x + 4 = 8(y+4)/11<BR>\n" );
document.write( "substitute for x in second equation<BR>\n" );
document.write( "(7y/10) + 4 = 8(y+4)/11<BR>\n" );
document.write( "denominator will be 10*11 = 110<BR>\n" );
document.write( "11*(7y) + 4*110 = 80(y+4)<BR>\n" );
document.write( "77y +440 = 80y +320<BR>\n" );
document.write( "3y = 120<BR>\n" );
document.write( "y = 40<BR>\n" );
document.write( "x = 7*40 / 10 = 28<BR>\n" );
document.write( "Carlo's age is 28 and Mark's age is 40<BR>\n" );
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