document.write( "Question 1187059: What is the present value of an investment that will be worth $25,000 at the end of five years? Assume an APR of 5% compounded monthly.
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Algebra.Com's Answer #818021 by Theo(13342)![]() ![]() You can put this solution on YOUR website! the formula to use for this problem is:\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "f = p * (1 + r) ^ n\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "f is the future value \n" ); document.write( "p is the present value \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( "in your problem:\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "f = 25000 \n" ); document.write( "p = what you want to find. \n" ); document.write( "r = .05/12 (formula uses the rate, not the percent). \n" ); document.write( "n = 5 * 12 = 60\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "your time periods are in months, so rate per year is divided by 12 to get rate per month, and 5 years is multiplied by 12 to get 60 months.\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "formula becomes:\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "25000 = p * (1 + .05/12) ^ (5 * 12)\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "solve for p to get:\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "p = 25000 / ((1 + .05/12) ^ (5 * 12)) = 19480.13476.\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "you can also use a financial calculator like the one found at https://arachnoid.com/finance/index.html\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "your inputs are shown below:\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( " ![]() \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "your output is shown below:\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( " ![]() \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "the calculator uses the percent, not the rate. \n" ); document.write( "you can't enter 5/12. \n" ); document.write( "it doesn't know what to do with that. \n" ); document.write( "you have to enter the result of 5/12 = .41666666667. \n" ); document.write( "give it enough sixes so that it will give you a more detailed answer. \n" ); document.write( "8 or 9 of them is enough. \n" ); document.write( "you can round at the end with a 7, or just leave it as sixes. \n" ); document.write( "the calculator will display only 6 of them and it will round the last digit displayed.\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "you can see that the answer is the same as the one you got with the formula, except it's rounded to 2 decimal digits.\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "either way, your answer is that the present value is 19,480.13 rounded to 2 decimal digits.\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "it is important to get the interest rate per time period and the number of tiem periods right.\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "in this problem the time periods were in months.\r \n" ); document.write( "\n" ); document.write( " \n" ); document.write( " |