document.write( "Question 1137096: Melinda invested twice as much money in an
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Algebra.Com's Answer #754944 by ikleyn(52781) $\"\"$ $\"About$

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document.write( "Let x be an amount invested at 5%, the unknown value under the question.\r\n" );
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document.write( "Then the amount invested at 3.5% is the 0.5x dollars, according to the condition.\r\n" );
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document.write( "Your basic equation is THIS:\r\n" );
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document.write( "interest + interest     = total interest\r\n" );
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document.write( "0.05*x   + 0.035*(0.5x) = 303.75.\r\n" );
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document.write( "0.05x    + 0.0175       = 303.75\r\n" );
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document.write( "0.0675x = 303.75   ====>  x =  = 4500.\r\n" );
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document.write( "Answer.  $4500 was invested at 5%  and half of that, $2250 dollars was invested at 3.5%.\r\n" );
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document.write( "Check.   0.05*4500 + 0.035*2250 =  303.75 dollars.   ! Precisely correct !\r\n" );
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\n" ); document.write( "\n" ); document.write( "To see many other similar solved problems on investment, look into the lesson\r
\n" ); document.write( "\n" ); document.write( " - Using systems of equations to solve problems on investment\r
\n" ); document.write( "\n" ); document.write( "in this site.\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( "\n" ); document.write( "Save the link to this online textbook together with its description\r
\n" ); document.write( "
\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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\n" ); document.write( "\n" ); document.write( "to your archive and use it when it is needed.\r
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