document.write( "Question 692100: You invest $40,000 in two funds paying 3% and 4 1/2% simple interest. The total annual interest is $1650. How much do you invest in each fund? \n" ); document.write( "
Algebra.Com's Answer #426922 by stanbon(75887)\"\" \"About 
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You invest $40,000 in two funds paying 3% and 4 1/2% simple interest. The total annual interest is $1650. How much do you invest in each fund?
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\n" ); document.write( "Quantity Eq: t + f = 40,000 dollars
\n" ); document.write( "Interest Eq:0.03t + 0.045f = 1650 dollars
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\n" ); document.write( "Multiply thru top eq. by 30
\n" ); document.write( "Multiply thru bottom eq. by 1000
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\n" ); document.write( "30t + 30f = 30*40,000
\n" ); document.write( "30t + 45f = 1650000
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\n" ); document.write( "Subtract and solve for \"f\":
\n" ); document.write( "15f = 450000
\n" ); document.write( "f = $30,000 (amt invested at 4.5%
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\n" ); document.write( "Solve for \"t\" usiing t + f = 40,000
\n" ); document.write( "t = $10,000 (amt. invested at 3%)
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\n" ); document.write( "Cheers,
\n" ); document.write( "Stan H.
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