The mean age of 15 students in a class is 6 years. If the age of their teacher is included, mean becomes 9 years. Which is the age of the teacher?

asked Feb 20, 2021 232k views

3 votes

The mean age of 15 students in a class is 6 years. If the age of

their teacher is included, mean becomes 9 years. Which is the age of
the teacher?

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6 votes

Answer:

might be wrong but 54

Explanation:

15 × 6 = 90

90 + 54 = 144

144 ÷ 16 = 9

hope this helps

Roman Glass answered Feb 24, 2021

5.8k points

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