document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=731962>Question 731962</A>: <I><SPAN STYLE=\"word-break: break-all;\"> \r<BR>\n" );
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document.write( "Marissa invested $7000 for 1 year. Part was invested at 4% simple interest and part at 7% simple interest. At the end of 1 year, she had earned $391 in interest. How much had she invested at each rate? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #447507 by </B><A HREF=/tutors/aboutme.mpl?userid=checkley79><B>checkley79(3341)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=checkley79><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=447507\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> .07X+.04(7000-X)=391<BR>\n" );
document.write( ".07X+280-.04X=391<BR>\n" );
document.write( ".03X=391-280<BR>\n" );
document.write( ".03X=111<BR>\n" );
document.write( "X=111/.03<BR>\n" );
document.write( "X=$3,700 WAS INVESTED @ 7%<BR>\n" );
document.write( "7000-3700=$3300 WAS INVESTED @ 4%<BR>\n" );
document.write( "PROOF:<BR>\n" );
document.write( ".07*3700+.04*3300=391<BR>\n" );
document.write( "259+132=391<BR>\n" );
document.write( "391=391 </SPAN>\n" );
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