document.write( "Question 1015891: An executive invests $23,000, some at 6% and some at 4% annual interest. If he receives an annual return of $1300, how much is invested at each rate?
\n" ); document.write( "at 6% interest $
\n" ); document.write( "at 4% interest $
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Algebra.Com's Answer #632294 by macston(5194)\"\" \"About 
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\n" ); document.write( "F=amount at 4%; S=amount at 6%
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\n" ); document.write( "F+S=$23000
\n" ); document.write( "F=$23000-S
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\n" ); document.write( "0.04F+0.06S=$1300
\n" ); document.write( "0.04($23000-S)+0.06S=$1300
\n" ); document.write( "$920-0.04S+0.06S=$1300
\n" ); document.write( "0.02S=$380
\n" ); document.write( "S=$19000
\n" ); document.write( ".
\n" ); document.write( "F=$23000-S=$23000-$19000=$4000
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\n" ); document.write( "ANSWER: He invested $4000 at 4% and $19000 at 6%.
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\n" ); document.write( "CHECK:
\n" ); document.write( "0.04F+0.06S=$1300
\n" ); document.write( "0.04($4000)+0.06($19000)=$1300
\n" ); document.write( "$160+$1140=$1300
\n" ); document.write( "$1300=$1300\r
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