document.write( "Question 1123045: Linda Smaoke invests a total of $ 10,000 in two savings accounts. One account pays 6 % interest, and the other, 7 %. Find the amount placed in each account if the accounts receive a total of $ 610 in interest after 1 year. Use interest=principalXrateXtime \n" ); document.write( "
| Algebra.Com's Answer #739258 by ikleyn(52879)     You can put this solution on YOUR website! . \n" ); document.write( " \r\n" ); document.write( "Let x= the amount invested at 7%.\r\n" ); document.write( "\r\n" ); document.write( "The the rest, 10000-x dollars is the amount invested at 6%.\r\n" ); document.write( "\r\n" ); document.write( "\r\n" ); document.write( "\r\n" ); document.write( "The interest equation is\r\n" ); document.write( "\r\n" ); document.write( "\r\n" ); document.write( " 0.07x + 0.06*(10000-x) = 610 dollars.\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 evaluate 10000 -x.\r\n" ); document.write( "\r \n" ); document.write( "\n" ); document.write( "------------------\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "It is a typical and standard problem on investment.\r \n" ); document.write( " \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 \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( " |