document.write( "Question 86932: An investmest of $5600 is made at an annual simple interest of 6.5%. How much additional money must be invested at an annual simple interest rate of 9% so that the total interest earned is 8% of the total investment. \n" ); document.write( "
Algebra.Com's Answer #62890 by stanbon(75887)\"\" \"About 
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An investmest of $5600 is made at an annual simple interest of 6.5%. How much additional money must be invested at an annual simple interest rate of 9% so that the total interest earned is 8% of the total investment.
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\n" ); document.write( "Amt. invested at 6.5% = $5600 : interest on this is 0.065*5600 = $364.00
\n" ); document.write( "Amt invested at 9% = x dollars: interest on this is 0.09x dollars
\n" ); document.write( "Amt invested at 8% = (5600+x) ; interest on this is 0.08(5600+x) = 448+0.08x
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\n" ); document.write( "EQUATION:
\n" ); document.write( "interest + interest = interest
\n" ); document.write( "364 + 0.09x = 448+0.08x
\n" ); document.write( "0.01x = 84
\n" ); document.write( "x = $8400 (Amt that must be invested at 9%)
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\n" ); document.write( "Cheers,
\n" ); document.write( "Stan H.\r
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