document.write( "Question 334382: Arlene purchased some municipal bonds yielding 7% annually and some certificates of deposit yielding 9% annually. If Arlene's investment amounts to $11,000 and the annual income is $810, how much money is invested in bonds and how much is invested in certificates of deposit? I also wanted to say thank you very much for helping me out with my algebra and its my first time doing this. And my name is Stuart. \n" ); document.write( "

Algebra.Com's Answer #239580 by stanbon(75887) $\"\"$ $\"About$

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Arlene purchased some municipal bonds yielding 7% annually and some certificates of deposit yielding 9% annually.
\n" ); document.write( "If Arlene's investment amounts to $11,000 and the annual income is $810, how much money is invested in bonds and how much is invested in certificates of deposit?
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\n" ); document.write( "Quantity Equation: x + y = 11000
\n" ); document.write( "Income Equation::0.07x+0.09y = 810
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\n" ); document.write( "Multiply thru the Quantity Equation by 7
\n" ); document.write( "Multiply thru the Income Equation by 100
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\n" ); document.write( "7x + 7y = 77000
\n" ); document.write( "7x + 9y = 81000
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\n" ); document.write( "Subtract 1st from 2nd and solve for \"y\":
\n" ); document.write( "2y = 4000
\n" ); document.write( "y = $2000 (amt. invested in 9% CD's)
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\n" ); document.write( "Cheers,
\n" ); document.write( "Stan H. \n" ); document.write( "

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