the average salary per head of the entire staff of an office including the officers and clerks is rs . 90 . the average salary of officers is rs . 600 and that of the clerks is rs . 84 . if the number of officers is 2 , find the number of officers in the office ?
6 * 22 = 132 7 * 19 = 133 - - - - - - - - - - - - - - 1 . answer : a
divide(90, add(84, add(const_3, const_3)))