Question

Average age of 40 boys of a class is 15 years.
If the age of the teacher is included then
their average age is 16. What is the age of the
teacher?
al 61 years​

Answer 1

Answer:

Teacher is 40years old.

Answer 2

Step-by-step explanation:

(Sum of the ages of all 40 boys)/40 = 15 years

Sum of the ages of all 40 boys = 15×40 years

= 600 years

(Sum of the ages of all 40 boys + teacher's age)/41 = 16 years

(600 years + teacher's age) = 16×41 years

(600 years + teacher's age) = 656 years

Teacher's age = 656 - 600 years

Teacher's age = 56 years [Answer]