Question

HOMEWORK
A. The average age of a child in a class of 35 is 11. The average age, including the teacher is 12.
How old is the teacher?​

Answer 1

Answer:

\begin{gathered}total \: age \: of \: children = 35 \times 11 = 385 \\ if \: we \: include \: teacher \: then \: total \: age = 36 \times 12 = 432 \\ teachers \: age = 432 - 385 = 47 \: years\end{gathered}

totalageofchildren=35×11=385

ifweincludeteacherthentotalage=36×12=432

teachersage=432−385=47years

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Answer 2

Step-by-step explanation:

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