document.write( "Question 585221: Do you know what formula to use in solving this problem? Also could I get an example of the formula being applied to the question? Here is the question. You deposit $40 at the end of every six months into an annuity with 5% interest compounded semiannually. How much interest will have accumulated after 25 years? Do not round until the final answer. Then round to the nearest dollar as needed. \n" ); document.write( "
Algebra.Com's Answer #373397 by ankor@dixie-net.com(22740)![]() ![]() You can put this solution on YOUR website! Do you know what formula to use in solving this problem? Also could I get an example of the formula being applied to the question? Here is the question. You deposit $40 at the end of every six months into an annuity with 5% interest compounded semiannually. How much interest will have accumulated after 25 years? Do not round until the final answer. Then round to the nearest dollar as needed. \n" ); document.write( ": \n" ); document.write( "A Annuity formula: FV = P * \n" ); document.write( "FV = final value \n" ); document.write( "P = payment \n" ); document.write( "r = interest rate (per period) \n" ); document.write( "n = number of periods \n" ); document.write( ": \n" ); document.write( "In this example \n" ); document.write( "p = 40 \n" ); document.write( "r = .05/2 = .025 interest rate for 6 mo \n" ); document.write( "n = 2 * 25 = 50 periods \n" ); document.write( ": \n" ); document.write( "FV = 40 * \n" ); document.write( "FV = 40 * \n" ); document.write( "FV = 40 * \n" ); document.write( "FV = 40 * \n" ); document.write( "FV = 40 * 97.58435 \n" ); document.write( "FV = $3899.37 is the final value \n" ); document.write( "However you wanted to know how much of this was interest \n" ); document.write( "The amt you paid into this in 50 payments, subtracted from the final value \n" ); document.write( "Int = 3899.37 - (40*50) \n" ); document.write( "Int = $1899.37 was interest \n" ); document.write( " \n" ); document.write( " |