Problem: the average salary of the employees in a office is rs . 120 / month . the avg salary of officers is rs . 460 and of non officers is rs 110 . if the no . of officers is 15 , then find the no of nonofficers in the office .
Rationale: "let no . of non - officers be x 15 * 460 + x * 110 = ( x + 15 ) 120 x = 510 e"
annotated_formula: divide(subtract(multiply(15, 460), multiply(15, 120)), subtract(120, 110))