The average age of boy

Question

The average age of boys in a class is 16 years and that of the girls is 15 years.
What is the average age for the whole class?

Options:

A . 15

B . 16

C . 15.5

D . Insufficient data

Answer: Option D

The average age of boys in a class is 16 years and that of the girls is 15 years.
What is the average age for the whole class?

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