document.write( "Question 1118761: What amount is accumulated after 3 years of P6,500 invested at a rate of 12% per year compounded semi annually. \n" ); document.write( "
Algebra.Com's Answer #734190 by Theo(13342)![]() ![]() You can put this solution on YOUR website! 12% compounded semi-annually would be equal to 12/2 = 6% per semi-annual period.\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "the formula for compound interest is 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 (months in this case). \n" ); document.write( "n is the number of time periods (months in this case).\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "in your problem, p = 6500, r = .12/2 = .06 per semi-annual period, n = 3 * 2 = 6 semi-annual periods.\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "the formula becomes 6500 = p * (1 + .06) ^ 6.\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "solve for p to get p = 6500 / ((1 + .06) ^ 6)\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "you get p = 4582.243513.\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "6500 = 4582.243513 * (1 + .06) ^ 6 becomes 6500 = 6500, confirming the solution is correct.\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "in these compounded interest rate calculations, if you are given the annual interest rate and the number of years, then:\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "interest rate per time period = annual interest rate divided by number of compounding periods per year.\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "number of time periods = number of years times number of compounding periods per year.\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "in your problem, you spefied compounding semi-annually.\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "that means 2 compounding periods per year.\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "12% / 2 = 6% per semi-annual period. \n" ); document.write( "3 years * 2 = 6 semi-annual periods.\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "in the formula, the interest rate percent is divided by 100 to get interest rate.\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "12% per year is there .12 per year. \n" ); document.write( "divide that by 2 and you get an interest rate of .06 per semi-annual period.\r \n" ); document.write( " \n" ); document.write( " \n" ); document.write( "\n" ); document.write( " \n" ); document.write( " |