if there are 20 apples and the apples have to be shared equally among 3 babies . what number of apples are to be added ?
given there are 20 apples . if 1 extra apple is added , then it becomes 21 which can be divided equally that is 7 apples to each baby . option a is correct .
subtract(multiply(add(const_4, const_3), 3), 20)