document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=400831>Question 400831</A>: <I><SPAN STYLE=\"word-break: break-all;\"> hello I am really struggling with this word problem: \r<BR>\n" );
document.write( "\n" );
document.write( "A high school student was able to save $3000 by working a part-time job every summer. He invested half the money in a money market account and half the money in a stock that paid three times as much interest as the money market account. After a year he earned $90 in interest. What were the interest rates of the money market account and the stock?\r<BR>\n" );
document.write( "\n" );
document.write( "Answer in percentages and round to one decimal place.\r<BR>\n" );
document.write( "\n" );
document.write( "Thank you.\r<BR>\n" );
document.write( "<BR>\n" );
document.write( "\n" );
document.write( " </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #283723 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=283723\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> A high school student was able to save $3000 by working a part-time job every summer. <BR>\n" );
document.write( "He invested half the money in a money market account and half the money in a stock that paid three times as much interest as the money market account.<BR>\n" );
document.write( "---<BR>\n" );
document.write( "1500 invested at r<BR>\n" );
document.write( "1500 invested at 3r<BR>\n" );
document.write( "-------\r<BR>\n" );
document.write( "\n" );
document.write( "After a year he earned $90 in interest. <BR>\n" );
document.write( "What were the interest rates of the money market account and the stock? <BR>\n" );
document.write( "Answer in percentages and round to one decimal place.<BR>\n" );
document.write( "----<BR>\n" );
document.write( "Equation:<BR>\n" );
document.write( "interest + interest = interest<BR>\n" );
document.write( "1500r + 1500(3r) = 90<BR>\n" );
document.write( "1500r + 4500r = 90<BR>\n" );
document.write( "6000r = 90<BR>\n" );
document.write( "r = 0.015 or 1.5% (money market investment rate)<BR>\n" );
document.write( "3r = 0.045 or 4.5% (stock investment rate)<BR>\n" );
document.write( "============================<BR>\n" );
document.write( "cheers,<BR>\n" );
document.write( "stan H. </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );