the tax on a commodity is diminished by 16 % and its consumption increased by 15 % . the effect on revenue is ?
100 * 100 = 10000 84 * 115 = 9660 - - - - - - - - - - - 10000 - - - - - - - - - - - 340 100 - - - - - - - - - - - ? = > 3.4 % decrease answer : c
subtract(const_100, multiply(multiply(add(const_1, divide(15, const_100)), subtract(const_1, divide(16, const_100))), const_100))