document.write( "Question 345340: a total of $8000 is invested. part at 7% and the remainder at 15%. how much is invested at each rate if theannual intrest is 680$? \n" ); document.write( "
Algebra.Com's Answer #247009 by Fombitz(32388)![]() ![]() You can put this solution on YOUR website! Let A be the amount invested at 7%, B the amount at 15%. \n" ); document.write( "1. \n" ); document.write( "2. \n" ); document.write( "Multiply eq. 1 by (-7) and add to eq. 2, \n" ); document.write( " \n" ); document.write( " \n" ); document.write( " \n" ); document.write( "Then from eq. 1, \n" ); document.write( " \n" ); document.write( " |