# Find The Total Number of Workers

The average salary of all the worker in a workshop is 8,000. The average salary of 7 technicians is ₹ 12.000 and the average salary of the rest is ₹ 6,000. The total number of workers in the workshop is

- 20
- 21
- 22
- 23

**Answer: (2) 21**

**Explanation:-**

Let the total number of workers in a workshop = N

The average of all workers = 8000 (Given in the question)

The total salary of all workers = 8000 N.

The average of salary of 7 technicians = Rs.12,000

The total salary of 7 technicians = 12,000 x 7 = Rs.84,000

The average of remaining workers = 6,000

The total salary of remaining workers = 6,000 x (N – 7)

Then,

8000 N = 84,000 + 6,000 x (N – 7)

8,000 N = 84,000 – 42,000 + 6000 N

8,000 N – 6,000 N = 42,000

2000 N = 42,000

N = 42,000/2000

N = 21

There are 21 workers in the workshop.