document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=188298>Question 188298</A>This question is from textbook <A HREF=http://www.amazon.com/exec/obidos/ASIN/0974903620/algebrahomeworkh>Teaching Textbook</A><BR>\n" );
document.write( ": <I><SPAN STYLE=\"word-break: break-all;\"> Annie-Sophie invested some of her $20,000 in bonds that made an 8% profit and the rest in bonds that made a 7% profit. If the profit on the 8% bonds was $700 more than the profit on the 7% bonds, how much did Anne-Sophie invest in the 7% bonds? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #141430 by </B><A HREF=/tutors/aboutme.mpl?userid=jojo14344><B>jojo14344(1513)</B></A><img src=\"/images/stars/stars-12.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=jojo14344><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=141430\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> <font face=\"Tahoma\" size=1.5><BR>\n" );
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document.write( "Let <font color=blue>x</font> = money invested money that made 8% profit\r<BR>\n" );
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document.write( "Then, <font color=blue>$20,000 - x </font> = money invested at 7% profit\r<BR>\n" );
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document.write( "Also, let <font color=brown>y</font> = profit for 7% bonds\r<BR>\n" );
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document.write( "Then again, <font color=brown> $700 + y </font> = profit for 8%, $700 more than profit on 7%.\r<BR>\n" );
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document.write( "Putting into eqn for 8%:<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=0.08%28x%29=700%2By ALIGN=MIDDLE  ALT=\"0.08%28x%29=700%2By\"   DISABLED_style= \"max-width:90%; height:auto;\" > --------------------> Eqn 1\r<BR>\n" );
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document.write( "Putting into eqn for 7%:<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=%2820000-x%29%280.07%29=y ALIGN=MIDDLE  ALT=\"%2820000-x%29%280.07%29=y\"   DISABLED_style= \"max-width:90%; height:auto;\" > ----------------> Eqn 2\r<BR>\n" );
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document.write( "In Eqn 1 we get, <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=y=0.08%28x%29-700 ALIGN=MIDDLE  ALT=\"y=0.08%28x%29-700\"   DISABLED_style= \"max-width:90%; height:auto;\" > -----> Eqn 3, substitute in Eqn 2:\r<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=%282000-x%29%280.07%29=highlight%28%280.08%29%28x%29-700%29 ALIGN=MIDDLE  ALT=\"%282000-x%29%280.07%29=highlight%28%280.08%29%28x%29-700%29\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=1400-0.07x=0.08x-700 ALIGN=MIDDLE  ALT=\"1400-0.07x=0.08x-700\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=1400%2B700=0.08x%2B0.07x ALIGN=MIDDLE  ALT=\"1400%2B700=0.08x%2B0.07x\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=2100=0.15x ALIGN=MIDDLE  ALT=\"2100=0.15x\"   DISABLED_style= \"max-width:90%; height:auto;\" >------> <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=cross%282100%2914000%2Fcross%280.15%29=cross%280.15%29x%2Fcross%280.15%29 ALIGN=MIDDLE  ALT=\"cross%282100%2914000%2Fcross%280.15%29=cross%280.15%29x%2Fcross%280.15%29\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
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document.write( "<font color=blue>x = $14,000 </font> money invested for 8%\r<BR>\n" );
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document.write( "$20,000 - $14,000 = <font color=red>$6,000 </font> money invested for 7%.( Answer)\r<BR>\n" );
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document.write( "Let's check the Profit\r<BR>\n" );
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document.write( "For 7%<BR>\n" );
document.write( "$6000 x 0.07 = <font color=blue> $420 </font>\r<BR>\n" );
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document.write( "For 8%<BR>\n" );
document.write( "$14,000 x 0.08 = <font color=blue> $1120 </font>\r<BR>\n" );
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document.write( "Profit (8%) - Profit (7%) = $1120 - $420 = <font color=brown> $700 </font><BR>\n" );
document.write( "That is right, $700 more on 8%.\r<BR>\n" );
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document.write( "Thank you,<BR>\n" );
document.write( "Jojo</font>\r<BR>\n" );
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document.write( " </SPAN>\n" );
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