Question

The average age of 14 students is 14 years. if the age of the teacher is added the average increase by 1. What is the age of the teacher?

• A. 32 years
• B. 30 years
• C. 28 years
• D. 29 years

Answer 1

Answer:

D. 29 years

The total age of 14 students = (14 × 14) = 196 The total age of 15 students and teacher = (15 × 15) = 225 Age of the teacher = (225 – 196) ⇒ 29 years