document.write( "Question 942569: An executive invests $28,000, some at 8% and some at 4% annual interest. If he receives an annual return of $1,720, how much is invested at each rate? \n" ); document.write( "

Algebra.Com's Answer #574625 by TimothyLamb(4379) $\"\"$ $\"About$

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x = dollar amount invested at 8%
\n" ); document.write( "y = dollar amount invested at 4%
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\n" ); document.write( "x + y = 28000
\n" ); document.write( "0.08x + 0.04y = 1720
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\n" ); document.write( "put the system of linear equations into standard form
\n" ); document.write( "---
\n" ); document.write( "x + y = 28000
\n" ); document.write( "0.08x + 0.04y = 1720
\n" ); document.write( "---
\n" ); document.write( "copy and paste the above standard form linear equations in to this solver:
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\n" ); document.write( "---
\n" ); document.write( "solution:
\n" ); document.write( "x = 15000
\n" ); document.write( "y = 13000
\n" ); document.write( "---
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