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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\n" ); document.write( "\n" ); document.write( "What I need help with is how to set the problem up, by a system of linear equations.
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Algebra.Com's Answer #278320 by mananth(16946)\"\" \"About 
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 $520, how much was invested at each rate?\r
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\n" ); document.write( "\n" ); document.write( "$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%
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\n" ); document.write( "CHECK
\n" ); document.write( "2000*0.06 + 5000*0.08 = $520
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\n" ); document.write( "m.ananth@hotmail.ca
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