a present value of a machine is $ 900 . its value depletiation rate is 25 % per annum then find the machine value before 2 years ?
"p = $ 900 r = 25 % t = 2 years machine value before 2 years = p / [ ( 1 - r / 100 ) ^ t ] = 900 * 4 / 3 * 4 / 3 = $ 1600 answer is c"
multiply(900, power(subtract(const_1, divide(25, const_100)), 2))