This question was previously asked in

SSC CGL Tier-II ( JSO ) 2019 Official Paper ( Held On : 17 Nov 2020 )

Option 3 : Rs. 35,000

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314011

10 Questions
10 Marks
7 Mins

**Given**

Total employ in the office = 25

Mean salary of the employees = Rs 30,000/ month

An senior officer retired whose salary = 60,000/month

After adding new clerk the mean salary of the employees reduced by 1,000 per month.

**Formula**

Mean = Sum of the all observations/number of observations

**Calculation**

The mean salary of 25 employees = 30,000

⇒ The sum of the salary of all employees = 30000 × 25

⇒ 750,000

After retiring the senior officer of monthly salary 60,000

⇒ New sum of salary = 750,000 – 60,000

⇒ 690,000

After adding new member the average salary salary was reduced by 1000

⇒ New average salary = 29,000

⇒ New sum of salary of 25 employees = 29000 × 25

⇒ 725,000

The salary of new employees per month = 725,000 – 690,000

**⇒**** The salary of new employees be Rs 35,000 per month**