in a class, the average age of 20 students is 15 years. if the teacher is also

Question

in a class, the average age of 20 students is 15 years. if the teacher is also included in the class, the average age increases by one year. what is the age of the teacher ?

Options:

A . 32 years

B . 34 years

C . 36 years

D . 40 years

Answer: Option C
Explanation :

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