Question

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

Options

• 44 years

• 40 years

• 52 years

• 66 years

Answer 1

44 years

Explanation:

Average age of 29 boys = 14 years

When teacher included average = 15 years

Age of teacher = 30 × 15 – 29 × 14

= 450 – 406 = 44 years