document.write( "Question 277712: Could this be shown how I would put in equation form? And what the answers would be. I think I may be making this worse than it is?\r
\n" ); document.write( "\n" ); document.write( "A person invests $36,000, partly at 5%, partly at 6%, and the remainder at 6.5%. The total annual interest is $2,190. Three times the amount invested at 6% equals the amount invested at 5% and 6.5% combined. How much is invested at each rate?\r
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\n" ); document.write( "Confused
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Algebra.Com's Answer #202187 by scott8148(6628)\"\" \"About 
You can put this solution on YOUR website!
let x=\"amount @ 5%\", y=\"amount @ 6%\", and z=\"amount @ 6.5%\"\r
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\n" ); document.write( "\n" ); document.write( "x + y + z = 36000\r
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\n" ); document.write( "\n" ); document.write( "x(5%) + y(6%) + z(6.5%) = 2190\r
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\n" ); document.write( "\n" ); document.write( "3y = x + z\r
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\n" ); document.write( "\n" ); document.write( "substituting ___ (3y) + y = 36000 ___ y = 9000\r
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\n" ); document.write( "\n" ); document.write( "x + z = 27000\r
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\n" ); document.write( "\n" ); document.write( "x(5%) + z(6.5%) = 1650\r
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\n" ); document.write( "\n" ); document.write( "you can find x and z using the last 2 equations
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