document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1188420>Question 1188420</A>: <I><SPAN STYLE=\"word-break: break-all;\"> a) A total of $40,000 was invested, part of it at 12% interest and the remainder at 15%.      <BR>\n" );
document.write( "If  the total yearly interest from both investments was $5,800. How much was invested at each rate </SPAN>\n" );
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document.write( "Bad data, requiring answers that are not whole numbers of dollars, and not even whole numbers of cents....<br><BR>\n" );
document.write( "x = amount invested at 12%<BR>\n" );
document.write( "40000-x = amount invested at 15%<br><BR>\n" );
document.write( "The total interest was 5800:<br><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=.12%28x%29%2B.15%2840000-x%29=5800 ALIGN=MIDDLE  ALT=\".12%28x%29%2B.15%2840000-x%29=5800\"   DISABLED_style= \"max-width:90%; height:auto;\" ><br><BR>\n" );
document.write( "You can do the algebra to try to find the answer.<hr><BR>\n" );
document.write( "Here is a quick informal way to find the answer.<br><BR>\n" );
document.write( "All $40,000 invested at 12% would yield $4800 interest; all at 15% would yield $6000.<BR>\n" );
document.write( "Look at the three numbers 4800, 5800, and 6000 on a number line and observe/calculate that 5800 is 1000/1200 = 5/6 of the way from 4800 to 6000.<BR>\n" );
document.write( "That means 5/6 of the total was invested at the higher rate.<br><BR>\n" );
document.write( "5/6 of $40,000 is not a whole number....<br><BR>\n" );
document.write( " </SPAN>\n" );
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