document.write( "Question 144992: investment problem.... richard inherited 15,000 dollars and invester it in two municial bonds. which pay 7% and 9% simple interest. the annual interest is 1,230.00 find the amount invested at each rate.
\n" ); document.write( "amount invested at 7% _______
\n" ); document.write( "amount invested at 9% _______ \n" ); document.write( "

Algebra.Com's Answer #105678 by vleith(2983) $\"\"$ $\"About$

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Let x be the amount invested at 7%. Then (15000-x) is the amount at 9%\r
\n" ); document.write( "\n" ); document.write( " $\"0.07x+%2B+0.09%2815000-x%29+=+1230\"$
\n" ); document.write( " $\"-0.02x+%2B+1350+=+1230+\"$
\n" ); document.write( " $\"-0.02+x+=+-120+\"$
\n" ); document.write( " $\"x+=+6000\"$ \r
\n" ); document.write( "\n" ); document.write( "9000 at 9%
\n" ); document.write( "6000 at 7%\r
\n" ); document.write( "\n" ); document.write( " \n" ); document.write( "

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