The average salary of all the workers in a workshop is Rs. 8000. The average salary of 7 technicians is Rs. 12000 and the average salary of the rest is Rs. 6000. The total number of workers in the workshop is

Rohan Raj • 6.53K Points
Tutor III Math

Q. The average salary of all the workers in a workshop is Rs. 8000. The average salary of 7 technicians is Rs. 12000 and the average salary of the rest is Rs. 6000. The total number of workers in the workshop is

(A) 20
(B) 21
(C) 22
(D) 23

Correct Answer - Option(B)

Explanation by: Rohan Raj

Let the total number of workers be x.
Then,
⇒ 8000x = (12000 × 7) + 6000(x - 7)
⇒ 2000x = 42000
⇒ x = 21

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