document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=457205>Question 457205</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Interest question, please help\r<BR>\n" );
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document.write( "$5400 is invested, part of it at 10% and part of it at 7%. For a certain year the total yield is $468. How much was invested at each rate? Thanks for your help. </SPAN>\n" );
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document.write( "$5400 is invested, part of it at 10% and part of it at 7%. For a certain year the total yield is $468. How much was invested at each rate? <BR>\n" );
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document.write( "Quantity Equation: x + y = 5400 dollars<BR>\n" );
document.write( "Interest Equation:0.10x + 0.07y = 469 dollars<BR>\n" );
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document.write( "Multiply thru 1st by 10<BR>\n" );
document.write( "Multiply thru 2nd by 100<BR>\n" );
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document.write( "10x + 10y = 54000<BR>\n" );
document.write( "10x +  7y = 46900<BR>\n" );
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document.write( "Subtract and solve for \"y\":<BR>\n" );
document.write( "3y = 7100<BR>\n" );
document.write( "y = $2366.67 (amt. invested at 7%)<BR>\n" );
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document.write( "Solve for \"x\":<BR>\n" );
document.write( "x+ y = 5400<BR>\n" );
document.write( "x  = 5400-2366.67<BR>\n" );
document.write( "x = $2633.33 (amt. invested at 10%)<BR>\n" );
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document.write( "Cheers,<BR>\n" );
document.write( "Stan H.<BR>\n" );
document.write( "============= </SPAN>\n" );
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