Question

73. The average age of 29 boys of a class is equals to 14
years. When the age of the class teacher is included
the average becomes 15 years. Find the age of the
class teacher.​

Answer 1

Answer:

Age of the class teacher is 44 years

Step-by-step explanation:

Average age=14

Total age of 29 boys/29=14

Total age=14*29

Total age=406

Let the age of class teacher be x

When teacher's age is included,

Average=15

(Total age of boys + age of the teacher)/30=15

406+x=15*30

406+x=450

x=450-406=44years