document.write( "Question 1142098: an investor invested a total of $1,800 in two mutual funds. One fund earned a 6% profit while the other earned a 3% profit. If the investor's profit was $69, how much was invested in each mutual fund? \n" ); document.write( "

Algebra.Com's Answer #762759 by ikleyn(52778) $\"\"$ $\"About$

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document.write( "Let x = amount at 6%, in dollars.\r\n" );
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document.write( "Then the amount at 3% is the rest (1800-x) dollars.\r\n" );
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document.write( "The interest from the 6% amount is 0.06*x  dollars.\r\n" );
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document.write( "The interest from the 3%   amount is 0.03*(1800-x)   dollars.\r\n" );
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document.write( "Your equation is\r\n" );
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document.write( "    interest + interest      = total interest,   or\r\n" );
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document.write( "    0.06*x   + 0.03*(1800-x) = 69   dollars.\r\n" );
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document.write( "From the equation, express x and calculate the answer\r\n" );
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document.write( "    x =  = 500.\r\n" );
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document.write( "Answer.  The amount at 6% is $500;  the rest  $1800-$500 = $1300 is the amount at 3%.\r\n" );
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document.write( "Check.   0.06*500 + 0.03*1300 = 69 dollars.   ! Correct !\r\n" );
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\n" ); document.write( "\n" ); document.write( "It is a typical and standard problem on investment.\r
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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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