document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=838759>Question 838759</A>: <I><SPAN STYLE=\"word-break: break-all;\"> I don't know where to start, please help!<BR>\n" );
document.write( "Albert invests money in three accounts that pay 4%, 10%, and 15%. He has two times as much money invested at 10% than he does at 15%. If the total amount he has invested is $4,950 and his interest for the year comes to $520, how much money does he have in each account? <BR>\n" );
document.write( "I know how to do it when there are only two varialbes, but no clue how to do it where there are three. </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #505331 by </B><A HREF=/tutors/aboutme.mpl?userid=Fombitz><B>Fombitz(32388)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=Fombitz><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=Fombitz><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=505331\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Let the three amounts be A, B, and C.<BR>\n" );
document.write( "1.<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=B=2C ALIGN=MIDDLE  ALT=\"B=2C\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "2.<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=A%2BB%2BC=4950 ALIGN=MIDDLE  ALT=\"A%2BB%2BC=4950\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=4%2AA%2F100%2B10%2AB%2F100%2B15%2AC%2F100=520 ALIGN=MIDDLE  ALT=\"4%2AA%2F100%2B10%2AB%2F100%2B15%2AC%2F100=520\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "3.<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=4A%2B10B%2B15C=52000 ALIGN=MIDDLE  ALT=\"4A%2B10B%2B15C=52000\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "When you substitute eq. 1 into eqs.2 and 3, you end up with only 2 variables (A & C).<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=A%2B2C%2BC=4950 ALIGN=MIDDLE  ALT=\"A%2B2C%2BC=4950\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "4.<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=A%2B3C=4950 ALIGN=MIDDLE  ALT=\"A%2B3C=4950\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( ".<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=4A%2B20C%2B15C=52000 ALIGN=MIDDLE  ALT=\"4A%2B20C%2B15C=52000\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "5.<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=4A%2B35C=52000 ALIGN=MIDDLE  ALT=\"4A%2B35C=52000\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
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document.write( "Now solve for A and C and go back to eq. 1 to solve for B.<BR>\n" );
document.write( "Repost if you still need help. \r<BR>\n" );
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document.write( " </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );