The average salary per head of all the workers in a company is ₹ 9000. The average salary of 15 officers is ₹ 10,000. Find the total number of workers in the company.

The average salary per head of all the workers in a company is ₹ 9000. The average salary of 15 officers is ₹ 10,000. Find the total number of workers in the company. 

• A. 75
• B. 80
• C. 50
• D. 40

 

The correct answer is option A. 75. Can you explain this answer in the comments?

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