document.write( "Question 392140: You invested $7000 in two accounts paying 6% interest and 8% annual interest. If the total earned for the year was $520, how much was invested at each rate?\r
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document.write( "What I need help with is how to set the problem up, by a system of linear equations. \n" );
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Algebra.Com's Answer #278320 by mananth(16946)![]() ![]() You can put this solution on YOUR website! You invested $7000 in two accounts paying 6% interest and 8% annual interest. If the total earned for the year was $520, how much was invested at each rate?\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "$x at 6% \n" ); document.write( "$7000-x @ 8% \n" ); document.write( "Interest earned = $520 \n" ); document.write( "... \n" ); document.write( "Interest equation \n" ); document.write( "6x + 8(7000-x) = 520 * 100 \n" ); document.write( "6x+56000-8x=52,000 \n" ); document.write( "-2x=52,000-56,000 \n" ); document.write( "-2x=-4000 \n" ); document.write( "/-2 \n" ); document.write( "x= 2000 \n" ); document.write( "$ 2000 @ 6% \n" ); document.write( "Balance $5000 @ 8% \n" ); document.write( "... \n" ); document.write( "CHECK \n" ); document.write( "2000*0.06 + 5000*0.08 = $520 \n" ); document.write( "... \n" ); document.write( "m.ananth@hotmail.ca \n" ); document.write( " |