The average salary of the employees in a office is Rs.120/month.The avg salary of officers is Rs.440 and of non officers is Rs 110. If the no.of officers is 15,then find the No of nonofficers in the office.  Select the correct option.
A) 400 B) 420 C) 480 D) 450 E) 510
Let no. of non- officers be x   15 * 440 + x * 110 = (x + 15) 120   x = 480   480
<result>C</result>
The average salary of the employees in a office is Rs.120/month.The avg salary of officers is Rs.440 and of non officers is Rs 110. If the no.of officers is 15,then find the No of nonofficers in the office.