Question

The average salary of 400 officers and staff in an office is Rs. 30,000. If the average salary of officers and employees is Rs.10,000 and Rs.20,000 respectively, how many officers are there in that office? A 40 B) 50 © 60 D 35​

Answer 1

Let the no. of officers be x

then no. of workers = 400 - x

According to question,

3000×400=10000×x+800000−2000x

400000 = 8000x

=> x = 50

Therefore, Number of officers = 50

and Workers = 350