Math, asked by zainabj9591, 1 year ago

The average age of 24 boys and teacher is 15 years.when the teacher's age is exculded,the average decreases by 1.what is the age of the teacher

Answers

Answered by Anonymous
1
Answer-

Total number of all boys and a teacher is 25.

Since average age of all boys and a teacher is 15 years,

Total sum of ages of all = 25×15 = 375 years.


When a teacher's age is excluded,

Total number of all boys = 24
&
Since average age reduces by 1,
=> Average age now = 14

So total sum of ages of 24 students=24×14=336 years.

●So teacher's age = 375-336 = 39 years.


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