The average monthly salary of 20 workers in an office is ₹ 7650. if the manager’s salary is added, the average salary becomes ₹ 8200 per month. What is the manager’s salary per month?
Average monthly salary of 20 workers = 7650 Rs
Total salary of 20 workers per month = 20×7650 = 153000Rs
The wage of one member of the group = 8100 Rs
New average salary of 20 workers and manager = 8200 per month
Let suppose salary of manager is x
The new average (20 workers + manager) = (given)
= 153000 + x = 8200 × 21
153000 + x = 172200
x = 172200 – 153000
x = 19200 Rs
Hence salary of manager is 19200Rs.