The average age of 30 students is 15 years. If the teacher’s age is also included then the average age increases by 1 year. The age of the teacher is

According to question , The average age of 30 students = 15 years Total age of 30 students = 30 × 15 = 450 years Total age of 30 students and teacher = ( 15 + 1 ) × 31 = 496 years ∴ Age of teacher = Total age of 30 students and teacher - Total age of 30 students Age of teacher = ( 496 – 450 ) = 46 years