Problem: the average monthly salary of 25 employees in an organisation is rs . 2500 . if the manager ' s salary is added , then the average salary increases by rs . 200 . what is the manager ' s monthly salary ?
Rationale: "manager ' s monthly salary = rs . ( 2700 * 26 - 2500 * 25 ) = rs . 7700 answer : a"
annotated_formula: subtract(multiply(add(2500, 200), add(25, const_1)), multiply(2500, 25))