document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=949243>Question 949243</A>: <I><SPAN STYLE=\"word-break: break-all;\"> The formula for calculating simple interest is I=prt, where I is the amount of interest, p is the amount invested, r is the annual rate of interest, and t is the time in years. Suppose that you invested $1200 for a period of six years and earned $396 simple interest. What was the annual rate of interest?\r<BR>\n" );
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document.write( "a. 0.055%<BR>\n" );
document.write( "b. 18%<BR>\n" );
document.write( "c. 0.55%<BR>\n" );
document.write( "d. 5.5%   </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #579445 by </B><A HREF=/tutors/aboutme.mpl?userid=MathLover1><B>MathLover1(20849)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=MathLover1><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=MathLover1><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=579445\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> <BR>\n" );
document.write( "The formula for calculating simple interest is <BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=I=prt ALIGN=MIDDLE  ALT=\"I=prt\"   DISABLED_style= \"max-width:90%; height:auto;\" >, where <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=I+ ALIGN=MIDDLE  ALT=\"I+\"   DISABLED_style= \"max-width:90%; height:auto;\" >is the amount of interest, <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=p ALIGN=MIDDLE  ALT=\"p\"   DISABLED_style= \"max-width:90%; height:auto;\" > is the amount invested, <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=r+ ALIGN=MIDDLE  ALT=\"r+\"   DISABLED_style= \"max-width:90%; height:auto;\" >is the annual rate of interest, and <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=t ALIGN=MIDDLE  ALT=\"t\"   DISABLED_style= \"max-width:90%; height:auto;\" > is the time in years. \r<BR>\n" );
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document.write( "Suppose that you invested $<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=1200 ALIGN=MIDDLE  ALT=\"1200\"   DISABLED_style= \"max-width:90%; height:auto;\" > for a period of six years and earned $<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=396 ALIGN=MIDDLE  ALT=\"396\"   DISABLED_style= \"max-width:90%; height:auto;\" > simple interest. What was the annual rate of interest? \r<BR>\n" );
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document.write( "given:\r<BR>\n" );
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document.write( "$<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=I=396 ALIGN=MIDDLE  ALT=\"I=396\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "$<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=p=1200 ALIGN=MIDDLE  ALT=\"p=1200\"   DISABLED_style= \"max-width:90%; height:auto;\" > <BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=t=6 ALIGN=MIDDLE  ALT=\"t=6\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
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document.write( "find <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=r+ ALIGN=MIDDLE  ALT=\"r+\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=I=prt ALIGN=MIDDLE  ALT=\"I=prt\"   DISABLED_style= \"max-width:90%; height:auto;\" > .......plug in given values\r<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=396=1200%2Ar%2A6 ALIGN=MIDDLE  ALT=\"396=1200%2Ar%2A6\"   DISABLED_style= \"max-width:90%; height:auto;\" >.....solve for <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=r ALIGN=MIDDLE  ALT=\"r\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=396=7200%2Ar ALIGN=MIDDLE  ALT=\"396=7200%2Ar\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=396%2F7200=r ALIGN=MIDDLE  ALT=\"396%2F7200=r\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=r=0.055 ALIGN=MIDDLE  ALT=\"r=0.055\"   DISABLED_style= \"max-width:90%; height:auto;\" > or  <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=r=5.5 ALIGN=MIDDLE  ALT=\"r=5.5\"   DISABLED_style= \"max-width:90%; height:auto;\" >%\r<BR>\n" );
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document.write( "so, your answer is option d. <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=5.5 ALIGN=MIDDLE  ALT=\"5.5\"   DISABLED_style= \"max-width:90%; height:auto;\" >%\r<BR>\n" );
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document.write( " </SPAN>\n" );
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