document.write( "Question 800172: $4,000 is invested at 3% interest. How much money must be invested at 5% interest so that the total interest from the two investments is $195 after a year? \r
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Algebra.Com's Answer #482964 by stanbon(75887)\"\" \"About 
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$4,000 is invested at 3% interest. How much money must be invested at 5% interest so that the total interest from the two investments is $195 after a year?
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\n" ); document.write( "Quantity Equation: t + f = 4000
\n" ); document.write( "Interest Equation: 3t+5f = 19500
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\n" ); document.write( "Modify for elimination::
\n" ); document.write( "3t + 3f = 12000
\n" ); document.write( "3t + 5f = 19500
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\n" ); document.write( "Subtract and solve for \"f\":
\n" ); document.write( "2f == 7500
\n" ); document.write( "f = $3750 (amt. invested at 5%)
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\n" ); document.write( "Solve for \"t\":
\n" ); document.write( "t + 3750 = 4000
\n" ); document.write( "t = $250 (amt. invested at 3%)
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\n" ); document.write( "Cheers,
\n" ); document.write( "Stan H.
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