document.write( "Question 441129: a woman invested some money at 8% and some at 9%. the interest for 1 year on the combined investment of $10,000 was $840. how much was invested at each rate. \n" ); document.write( "
Algebra.Com's Answer #305239 by rwm(914)\"\" \"About 
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x+y=10000
\n" ); document.write( ".08*x+.09*y=840
\n" ); document.write( "x=6000 at 8%
\n" ); document.write( "y=4000 at 9%\r
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