Question

The average salary of the entire staff in an office is Rs.200 per day. The average salary of officers is Rs.550 and that of non-officers is Rs.120. If the number of officers is 16, then find the numbers of non-officers in the office.

Answer 1

Answer:

Let the number of non-officers be y.

Then number of entire staff = 16 + y

Sum of total salary = 200(16 + y)

=16 x 550 + 120y

⇒ 120y + 550 x 16 = 200x16 + 200y

⇒ 3y +220 = 80 + 5y

⇒ 2y = 140

∴ y = 140/2 = 70

Answer 2

Answer:

70

Explanation:

let the no. of non officers= x

ATQ

16*550+120*x = 200*(16+x)

8800-3200 = 200x - 120x

x = 70