a present value of a machine is $ 128000 . its value depletiation rate is 25 % per annum then find the machine value after 3 years ?
"p = $ 128000 r = 25 % t = 3 years machine value after 3 years = p / ( 1 - r / 100 ) ^ t = 128000 * 3 / 4 * 3 / 4 * 3 / 4 = $ 54000 answer is a"
multiply(128000, power(subtract(const_1, divide(25, const_100)), 3))