document.write( "Question 321142: I need help solving this word problem\r
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document.write( "Write a system of two equations in two unknowns for each problem. Solve each system by substitution. \r
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document.write( "Investing her bonus. Donna invested her $33,000 bonus and received a total of $970 in interest after one year. If part of the money returned 4% and the remainder 2.25%, then how much did she invest at each rate? \n" );
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Algebra.Com's Answer #229975 by mananth(16946)![]() ![]() You can put this solution on YOUR website! Donna invested her $33,000 bonus and received a total of $970 in interest after one year. \r \n" ); document.write( "\n" ); document.write( "let her invest $ x at 4% and \n" ); document.write( "$ 33000-x at 2.25%, \n" ); document.write( ".. \n" ); document.write( "Interest equation \n" ); document.write( "0.04x+0.0225(33000-x)= 970 \n" ); document.write( "0.04x+742.5-0.0225x=970 \n" ); document.write( "0.0175x= 227.5 \n" ); document.write( " x= $13000 investment at 4 % \n" ); document.write( "Balance $2000 at 2.25% \n" ); document.write( " |