The average age of 30 boys of a class is
equal to 14 yr. When the age of the class
teacher is included the average becomes
15 yr. The age of the class teacher is
Answers
Answered by
1
Answer:
The age of the class teacher is 25
Answered by
3
Answer:
sum of total class age=30*14=420
then total members after adding the teacher=31
sum of new members=31*15=465
age of the teacher=465-420=45
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