the difference between the value of a number increased by 25 % and the value of the original number decreased by 30 % is 22 . what is the original number ?
"let the original # be x then 1.25 x − 0.7 x = 22 - - > x = 40 answer : a ."
divide(22, subtract(add(const_1, divide(25, const_100)), subtract(const_1, divide(30, const_100))))