the tax on a commodity is diminished by 10 % and its consumption increased by 25 % . the effect on revenue is ?
"100 * 100 = 10000 90 * 125 = 11250 - - - - - - - - - - - 10000 - - - - - - - - - - - 1250 100 - - - - - - - - - - - ? = > 12.5 % decrease answer : e"
subtract(const_100, multiply(multiply(add(const_1, divide(25, const_100)), subtract(const_1, divide(10, const_100))), const_100))