document.write( "Question 1130897: David received an inheritance of $50,000. His financial advisor suggests that he invest this
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document.write( "in three mutual funds: a money-market fund, a blue-chip stock fund, and a high-tech stock
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document.write( "fund. The advisor estimates that the money-market fund will return 5% over the next year,
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document.write( "the blue-chip fund 9%, and the high-tech fund 16% (all simple interest). David wants a total
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document.write( "first-year return of $4000 in interest income. To avoid excessive risk, he decides to invest three
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document.write( "times as much in the money-market fund as in the high-tech stock fund. How much should
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document.write( "be invested in each fund?
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Algebra.Com's Answer #747514 by ikleyn(52776)![]() ![]() You can put this solution on YOUR website! . \n" ); document.write( " \r\n" ); document.write( "If x is invested i n the high-tech, then 3x is invested in the money market.\r\n" ); document.write( "\r\n" ); document.write( "\r\n" ); document.write( "The rest, 50000-x-3x = 50-4x dollars is invested in the blue-chip.\r\n" ); document.write( "\r\n" ); document.write( "\r\n" ); document.write( "The total interest equation is\r\n" ); document.write( "\r\n" ); document.write( "\r\n" ); document.write( " 0.05*(3x) + 0.09*(50000-4x) + 0.16*x = 4000.\r\n" ); document.write( "\r\n" ); document.write( "\r\n" ); document.write( "Simplify and solve for x.\r\n" ); document.write( "\r\n" ); document.write( "\r\n" ); document.write( "Then estimate other investments.\r\n" ); document.write( "\r \n" ); document.write( "\n" ); document.write( "Very simple.\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "------------------\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "It is a standard and typical problem on investments.\r \n" ); document.write( " \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 \n" ); document.write( "\n" ); document.write( "in this site.\r \n" ); document.write( " \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 \n" ); document.write( " \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 \n" ); document.write( " \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 \n" ); document.write( " \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 \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "to your archive and use it when it is needed.\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( " \n" ); document.write( " |