Question

The average age of 40 boys of a class is 12 years. When 10 new boys are admitted, the average is increased by 0.1 year. What is the average age of new boys?

• A. 12.1 years
• B. 12.4 years
• C. 12.33 years
• D. 12.5 years

Answer 1

Answer: (D)

12.5 years

Answer 2

The correct option is (D): 12.5 years