Question

The average salary of 50 workers is Rs. 4000 out of which the average salary of 26 workers is Rs. 2400 and that of 17 workers is Rs. 4125. What is the average salary of the remaining workers? (value is approximate)
1. Rs 9250
2. Rs 9640
3. Rs 11,120
4. Rs 13,250
5. None of the above

Answer 1

Correct Answer - Option 2 : Rs 9640

Given:

The average salary of 50 workers = Rs. 4000

The average salary of 26 workers = Rs. 2400

The average salary of 17 workers = Rs. 4125

Formula used:

Average = Sum of the observation / Total number of observation

Calculation:

Total salary of 50 workers = 50 × 4000 = Rs. 200,000

⇒ Total salary of 26 workers = 26 × 2400 = Rs. 62400

⇒ Total salary of 17 workers = 17 × 4125 = Rs. 70,125

⇒ No. of remaining workers = 50 - 26 - 17 = 7

⇒ Total Salary of 7 workers = 200000 - 62400 - 70125 = 67475

⇒ Required average = 67475/7 = 9640 (approximately)

∴ The average salary of remaining workers is Rs. 9640 (value in approximate)