Math, asked by jewelmary, 1 month ago

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?​

Answers

Answered by janhvi414
1

Answer:

47

Step-by-step explanation:

the average age of students =x/35is 11

x=35×11=385

the average age of student and teacher =x/36=12

x=36×12

=432

the age of teacher= 432 - 385 =47

Answered by ITZSARCATICVAMPIRE
2

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Total strength of the class = 35

The average age of child = 11 .( excluding teacher)

Therefore, the total age of the students = 35 × 11

= 385 .( equation 1)

Total strength of the class = 36

The average age of child = 12 .( including teacher)

Therefore, the total age of the students including teacher = 12 × 36

= 432 .(equation 2)

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Age of the teacher = equation 2 - equation 1

= 432-385

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