document.write( "Question 208104This question is from textbook Elementary & Intermediate Algebra
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document.write( ": Donna invested her $33,000 bonus and received a total of $970 in interest after one year. If part of the money returned a 4% and the remainder 2.25%, then how much did she invest at each rate? \n" );
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Algebra.Com's Answer #157430 by checkley77(12844)![]() ![]() ![]() You can put this solution on YOUR website! .04x+.0225(33,000-x)=970 \n" ); document.write( ".04x+742.5-.0225x=970 \n" ); document.write( ".0175x=970-742.5 \n" ); document.write( ".0175x=227.5 \n" ); document.write( "x=227.5/.0175 \n" ); document.write( "x=$13,000 invested @ 4% \n" ); document.write( "33,000-13,000=$20,000 invested @ 2.25% \n" ); document.write( "Proof: \n" ); document.write( ".04*13,000+.0225*20,000=970 \n" ); document.write( "520+450=970 \n" ); document.write( "970=970 \n" ); document.write( " |