document.write( "Question 446037: A small corporation borrowed $900,000 to expand its line of toys. Some of the money was borrowed at 8%, some at 9%, and some at 10%. How much was borrowed at each rate if the annual interest owed was $77,400 and the amount borrowed at 8% was four times the amount borrowed at 10%? \n" ); document.write( "
Algebra.Com's Answer #307154 by stanbon(75887)\"\" \"About 
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A small corporation borrowed $900,000 to expand its line of toys. Some of the money was borrowed at 8%, some at 9%, and some at 10%. How much was borrowed at each rate if the annual interest owed was $77,400 and the amount borrowed at 8% was four times the amount borrowed at 10%?
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\n" ); document.write( "Quantity Eq:::: e + n + t = 900,000
\n" ); document.write( "Interest Eq:::0.08e+0.09n+0.10t = 77,400
\n" ); document.write( "Quantity Eq::: e +0 -4t = 0
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\n" ); document.write( "I used a matrix method on a TI-84 to solve
\n" ); document.write( "this system of 3 equations:
\n" ); document.write( "I got:
\n" ); document.write( "amt invested at 8%: e = $480,000
\n" ); document.write( "amt invested at 9%: n = $300,000
\n" ); document.write( "ant invested at 10% t = $120,000
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\n" ); document.write( "Cheers,
\n" ); document.write( "Stan H.
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