document.write( "Question 1135512: Suppose you invest $140 at the end of each month for 5 years into an account earning 9% annual interest compounded monthly. After 5 years, you leave the money, without making additional deposits, in the account for another 28 years. How much will you have in the end?\r
\n" );
document.write( "\n" );
document.write( "Does anyone know how to solve this problem? I struggled all night to figure this out, and I still get it wrong. Thanks a bunch. \n" );
document.write( "
Algebra.Com's Answer #753130 by Theo(13342)![]() ![]() You can put this solution on YOUR website! if you use the following financial calculator, you will get the following results.\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "https://arachnoid.com/finance/\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "after 5 years, you will have $10,559.38.\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "28 years after that, you will have $130,010.02.\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "i also used the TI-BA-II Business Analyst calculator and got $130,010.01 without rounding the intermediate number of $10,559.38.\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "using the BA-II, that future value came out as 10,559.37917.\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "the online financial calculator rounded that to 10,559.38.\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "consequently, your answer could be 130,010.02 or it could be 130,010.02.\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "try those out and see how your do.\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "there are also manual formula that you can use, but i wouldn't bother with those unless you are absolutely required to use them.\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "most of the ones that apply are in the following reference.\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "https://www.algebra.com/algebra/homework/Finance/THEO-2016-04-29.lesson#notes\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "the first of these formulas you would use is:\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "FUTURE VALUE OF AN ANNUITY WITH END OF TIME PERIOD PAYMENTS \r \n" ); document.write( "\n" ); document.write( "f = (a*((1+r)^n-1))/r \r \n" ); document.write( "\n" ); document.write( "f is the future value of the annuity. \n" ); document.write( "a is the annuity. \n" ); document.write( "r is the interest rate per time period. \n" ); document.write( "n is the number of time periods \r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "a is equal to 140. \n" ); document.write( "r is equal to 9/12 = .75 / 100 = .0075 \n" ); document.write( "n is equal to 5 * 12 = 60 \n" ); document.write( "solve for f to get f = 10559.37917\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "you would then take the future value result from formula and make it the present value of the following formula.\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "FUTURE VALUE OF A PRESENT AMOUNT \r \n" ); document.write( "\n" ); document.write( "f = p*(1+r)^n \r \n" ); document.write( "\n" ); document.write( "f is the future value. \n" ); document.write( "p is the present amount. \n" ); document.write( "r is the interest rate per time period. \n" ); document.write( "n is the number of time period. \r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "p is equal to 10559.37917 \n" ); document.write( "r is equal to .0075 \n" ); document.write( "n is equal to 28 * 12 = 336 \n" ); document.write( "solve for f to get f = 130010.0131\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "i also confirmed through excel that these figures are accurate.\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "here's the results of the excel analysis.\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( " ![]() \n" ); document.write( " \n" ); document.write( "\n" ); document.write( " ![]() \n" ); document.write( " \n" ); document.write( "\n" ); document.write( " ![]() \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "here's the results of the online calculator analysis.\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( " ![]() \n" ); document.write( " \n" ); document.write( "\n" ); document.write( " ![]() \n" ); document.write( " \n" ); document.write( " \n" ); document.write( "\n" ); document.write( " \n" ); document.write( " |