The average age of a group of men is increased by 6 years when a person aged 26 years is replaced by a new person of age 56 years. How many men are there in the group?

The average age of a group of men is increased by 6 years when a person aged 26 years is replaced by a new person of age 56 years. How many men are there in the group?

• A. 3
• B. 4
• C. 5
• D. 6

 

The correct answer is option C. 5. Can you explain this answer in the comments?

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