- A36
- B35
- C37
- D12
Step-by-Step Solution
New total = ; old total = . Teacher = 300 − 264 = 36 years.
Answer: A) 36
In a class of 24 children the average age is 11 years. When the class teacher's age is included, the average rises by 1 year. How old is the teacher (in years)?
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