document.write( "Question 1178363: The table of conversion from flat interest rate to reducing balance interest rate is based on the formula F= (1+R)^n (nR-1)+1/ n(1+R)^n-n, where F is the flat rate per month, R is the reducible rate per month and n is the number of monthly payments. To get the monthly rate, divide the annual rate by 12. Calculate the approximate flat interest rate for 8% per annum reducible for 3 years. \n" ); document.write( "
Algebra.Com's Answer #807836 by Theo(13342)![]() ![]() You can put this solution on YOUR website! F= (1+R)^n (nR-1)+1/ n(1+R)^n-n. \n" ); document.write( "F is the flat rate per month, R is the reducible rate per month and n is the number of monthly payments.\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "i don't know about that formula. \n" ); document.write( "i wasn't able to duplicate my answer with it. \n" ); document.write( "what i did do is the following:\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "i used a financial calculator to get the payment for reducing balance at 8% per month for 36 monhs, using a starting balance of 1000.\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "that monthly payment was 31.33636546.\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "multiply that by 36 months and the the sum of the payments was 1128.109157.\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "subtract 1 from that to get sum of all interest payments = 128.109157.\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "the flat rate formula is i = p * r * t \n" ); document.write( "i is the interest \n" ); document.write( "p is the principal \n" ); document.write( "r is the interest rate per time period \n" ); document.write( "t is the number of time periods.\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "with i = 128.109157 and p = 1000 and t = 36, the formula becomes: \n" ); document.write( "128.109157 = 1000 * r * 36 \n" ); document.write( "solve for r to get: \n" ); document.write( "r = 128.109157 / (1000 * 36) = .003558588. \n" ); document.write( "multiply that by 12 to get .042703052.\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "that's = to 4.2703052%.\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "what this says is that a flat rate of 4.2703052% per year is equivalent to a reducing balance rate of 8% per year compounded monthly.\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "what this is comparing is the interest from the flat rate loan to the interest from the reducing balance loan.\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "they will both charge the same overall interest with those rates.\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "i found a calculator online that does a comparison and that calculator confirms that i did the calculations correctly.\\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "here's what the results from that calculator looked like.\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( "this is the best i can do.\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "i tried to use the formula but am not sure if i interpreted it correctly.\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "the method should work regardless of what the amount of the loan is.\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "the online reducing balance calculator i used is at https://arachnoid.com/finance/index.html\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "the results from use of that calculator are shown below:\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( " ![]() \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "i used the ti-ba-ii which gave me the more detailed answer with more decimal places.\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "the flat rate versus reducing balance calculator can be found at https://emi-calc.com/flat-rate-vs-reducing-balance-rate-emi-calculation.php \n" ); document.write( " \n" ); document.write( " |