document.write( "Question 1172615: You have $30,000 to invest in two stock funds. The first fund pays 5% annual interest and the second pays 8% annual interest. If after a year you have made $2,100 interest. How much money did you invest in each account?
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Algebra.Com's Answer #797702 by ikleyn(52788)\"\" \"About 
You can put this solution on YOUR website!
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document.write( "You may start from these two equations\r\n" );
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document.write( "        x +     y = 30000    (1)    (total money)\r\n" );
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document.write( "    0.05x + 0.08y =  2100    (2)    (total interest)\r\n" );
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document.write( "You then reduce it to one single equation \r\n" );
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document.write( "    0.05x + 0.08*(30000-x) = 2100.\r\n" );
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document.write( "I leave it to you to complete the solution from this point.\r\n" );
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\n" ); document.write( "\n" ); document.write( "It is a standard and typical problem on investments.\r
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\n" ); document.write( "\n" ); document.write( "If you need more details,  or if you want to see other similar problems solved by different methods,  look into the lesson \r
\n" ); document.write( "\n" ); document.write( "    - Using systems of equations to solve problems on investment\r
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\n" ); document.write( "\n" ); document.write( "You will find there different approaches  (using one equation or a system of two equations in two unknowns),  as well as
\n" ); document.write( "different methods of solution to the equations  (Substitution,  Elimination).\r
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\n" ); document.write( "\n" ); document.write( "Also,  you have this free of charge online textbook in ALGEBRA-I in this site\r
\n" ); document.write( "\n" ); document.write( "    - ALGEBRA-I - YOUR ONLINE TEXTBOOK.\r
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\n" ); document.write( "\n" ); document.write( "The referred lesson is the part of this online textbook under the topic  \"Systems of two linear equations in two unknowns\".\r
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\n" ); document.write( "\n" ); document.write( "Save the link to this online textbook together with its description\r
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\n" ); document.write( "\n" ); document.write( "Free of charge online textbook in ALGEBRA-I
\n" ); document.write( "https://www.algebra.com/algebra/homework/quadratic/lessons/ALGEBRA-I-YOUR-ONLINE-TEXTBOOK.lesson\r
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