document.write( "Question 1141073: Phyllis invested $13,500, a portion earning a simple interest rate of
\n" ); document.write( "4 1/2% per year and the rest earning a rate of 4% per year. After 1 year the total interest earned on these investments was $585. How much money did she invest at each rate? \r
\n" ); document.write( "\n" ); document.write( "$______at 4 1/2%\r
\n" ); document.write( "\n" ); document.write( "$______at 4%
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Algebra.Com's Answer #761621 by josmiceli(19441)\"\" \"About 
You can put this solution on YOUR website!
Let \"+P+\" = Amt invested @ \"+4.5+\"%
\n" ); document.write( "\"+13500+-+P+\" = Amt invested @ \"+4+\"%
\n" ); document.write( "Let \"+I+\" = interest earned @ \"+4.5+\"%
\n" ); document.write( "\"+585+-+I+\" = interest earned @ \"+4+\"%
\n" ); document.write( "--------------------------------------------------
\n" ); document.write( "\"+I+=+P%2Ar%2At+\"
\n" ); document.write( "(1) \"+I+=+P%2A.045%2A1+\"
\n" ); document.write( "(2) \"+585+-+I+=+%28+13500+-+P+%29%2A.04%2A1+\"
\n" ); document.write( "-----------------------------------------------
\n" ); document.write( "(2) \"+585+-+.045P+=+540+-+.04P+\"
\n" ); document.write( "(2) \"+.005P+=+45+\"
\n" ); document.write( "(2) \"+P+=+9000+\"
\n" ); document.write( "and
\n" ); document.write( "\"+13500+-+P+=+13500+-+9000+\"
\n" ); document.write( "\"+13500+-+P+=+4500+\"
\n" ); document.write( "------------------------------------
\n" ); document.write( "$9,000 @ 4.5%
\n" ); document.write( "$4,500 @ 4%
\n" ); document.write( "----------------------
\n" ); document.write( "check:
\n" ); document.write( "\"+I+=+.045%2A9000+\"
\n" ); document.write( "\"+I+=+405+\"
\n" ); document.write( "and
\n" ); document.write( "\"+585+-+I+=+585+-+405+\"
\n" ); document.write( "\"+585+-+I+=+180+\"
\n" ); document.write( "\"+180+-+4500%2A.04+\"
\n" ); document.write( "\"+180+=+180+\"
\n" ); document.write( "OK
\n" ); document.write( "
\n" );