Question

The average monthly salary of five employees of a  school is Rs 3000. After retirement of one employee, average salary of remaining becomes Rs 3200. What was the salary of fifth employee at the time of retirement ?

Answer 1

Given : Average salary of 5 employees = Rs 3000

⇒ Sum of salary of 5 employees = 3000 x 5

 = Rs 15000

Again, average salary of 4 employees = 3200

∵ Sum of salary of 4 employees 

= 3200 x 4 = Rs 12800

Thus, salary of fifth employee 

= Sum of salary of 5 employees – Sum of salary of 4 employees

= Rs 15000 – Rs 12800 = Rs 2200