document.write( "Question 1022863: Suppose that you invest $20,000 into two accounts paying 7% and 9% annual interest, respectively. If the total interest earned for the year is $1550, how much was invested at each rate? For this question, I only want you to tell me how you would set the equation(s) up to solve this.
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Algebra.Com's Answer #638443 by addingup(3677)![]() ![]() You can put this solution on YOUR website! OK, I'll take you up to the equations. If you get stuck email me. \n" ); document.write( "~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ \n" ); document.write( "20,000 at 0.07 and 0.09 earn 1,550. \n" ); document.write( "Let's call the amount invested at 0.07 x. \n" ); document.write( "The rest of the money is invested at 0.09... how much is this amount? Well, out of 20,000, if x is invested at 0.07, that leaves 20,000-x to invest at 0.09: \n" ); document.write( "~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ \n" ); document.write( "0.07x+0.09(20,000-x) = 1,550 \n" ); document.write( "~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ \n" ); document.write( "You take it from there. \n" ); document.write( "J \n" ); document.write( " |