The average age of a class of 20 students is 14 years.

The average age of a class of 20 students is 14 years. The average increased by 2 when the teacher's age also included. What is the age of the teacher?

Quiz

Answer/Solution

36 years

Steps/Work

If age of the teacher was 14, average would not have changed.
Since average increased by 2,
Age of the teacher=14+22×1=36
ANSWER:E

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The average age of a class of students is years. The average increased by when the teacher's age also included. What is the age of the teacher?

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