document.write( "Question 717147: $5900 is invested, part at 10% and part of it at 8%. For a certain year, the total yield $ 534.00. How much was invested at 10% and at 8%? \r
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\n" ); document.write( "\n" ); document.write( "ive tried substitution method but keep getting wrong answer:( \n" ); document.write( "
Algebra.Com's Answer #440242 by ankor@dixie-net.com(22740)\"\" \"About 
You can put this solution on YOUR website!
$5900 is invested, part at 10% and part of it at 8%.
\n" ); document.write( " For a certain year, the total yield $ 534.00.
\n" ); document.write( " How much was invested at 10% and at 8%?
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\n" ); document.write( "let x = amt invested at 10%
\n" ); document.write( "let y = amt at 8%
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\n" ); document.write( "Two equations
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\n" ); document.write( "Total amt
\n" ); document.write( "x + y = 5900
\n" ); document.write( "y = (5900-x)
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\n" ); document.write( "and total interest
\n" ); document.write( ".10x + .08y = 534
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\n" ); document.write( "In the above equation, substitute (5900-x) for y
\n" ); document.write( ".10x + .08(5900-x) = 534
\n" ); document.write( ".10x + 472 - .08x = 534
\n" ); document.write( ".10x - .08x = 534 - 472
\n" ); document.write( ".02x = 62
\n" ); document.write( "x = 62/.02
\n" ); document.write( "x = $3100 invested at 10%
\n" ); document.write( ":
\n" ); document.write( "You can find the amt invested at 8%
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\n" ); document.write( "Check your solutions by finding the total interest from these amts \r
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