document.write( "Question 935383: The total annual interest for two investments are $81. Some amount of this money is invested at 5% simple interest and $300 more was invested at 7% simple interest. How much was invested at each rate \n" ); document.write( "
Algebra.Com's Answer #568581 by TimothyLamb(4379)\"\" \"About 
You can put this solution on YOUR website!
x = amount invested at 5%
\n" ); document.write( "y = amount invested at 7%
\n" ); document.write( "---
\n" ); document.write( "0.05x + 0.07y = 81
\n" ); document.write( "y = x + 300
\n" ); document.write( "---
\n" ); document.write( "put the system of linear equations into standard form
\n" ); document.write( "---
\n" ); document.write( "0.05x + 0.07y = 81
\n" ); document.write( "x - y = -300
\n" ); document.write( "---
\n" ); document.write( "copy and paste the above standard form linear equations in to this solver:
\n" ); document.write( "https://sooeet.com/math/system-of-linear-equations-solver.php
\n" ); document.write( "---
\n" ); document.write( "solution:
\n" ); document.write( "x = amount invested at 5% = 500
\n" ); document.write( "y = amount invested at 7% = 800
\n" ); document.write( "---
\n" ); document.write( "Free algebra tutoring live chat:
\n" ); document.write( "https://sooeet.com/chat.php?gn=algebra
\n" ); document.write( "---
\n" ); document.write( "Solve and graph linear equations:
\n" ); document.write( "https://sooeet.com/math/linear-equation-solver.php
\n" ); document.write( "---
\n" ); document.write( "Solve quadratic equations with quadratic formula:
\n" ); document.write( "https://sooeet.com/math/quadratic-formula-solver.php
\n" ); document.write( "---
\n" ); document.write( "Solve systems of linear equations up to 6-equations 6-variables:
\n" ); document.write( "https://sooeet.com/math/system-of-linear-equations-solver.php
\n" ); document.write( "--- \n" ); document.write( "
\n" );