Question

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. how many workers are there in the workshop ?

Answer 1

Let the no. of workers = x

Given that the average salary of all workers = rs.8000
Then, total salary of all workers = 8000x
Average salary of 7 technicians = rs. 12000
Total salary of 7 technicians = 7×12000= 84000

Count of the the rest of the employees = (x-7)
Average salary of the rest of the employees= rs.6000
Total salary of the rest of the employees =(x-7)6000


8000x = 84000+ (x-7)6000
8x = 84 + (x-7)6
8x = 84 + 6x - 42
2x = 42
x = 21

 so 21 workers are there in workshop