The average salary of all the workers in a workshop is Rs. 8,000. The average salary of 7 technicians is Rs. 12,000 and the average salary of the rest is Rs. 6,000. The total number of workers in the workshop is:

Answer: Option B

Let the rest workers = x
Now, According to question,
(7 + x) × 8000 = 12000 × 7 + 6000x
56000 + 8000x = 84000 + 6000x
2000x = 28000
x = 14
So total number of worker
= 14 + 7
= 21