## The average age of a class of 29 students is 11 years. If the age of teacher is included, then the average increases by 1 year. Find the age

Question

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## Answers ( )

Answer:41 years

Step-by-step explanation:Average=Sum of observations/no. of observations

11=Sum of age of students(s)/29

s=11*29

s=319

When teacher is included:

11+1=Sum of ages of teacher and students(S)/(29+1)

12=S/30

S=12*30

S=360

Sum of ages of students=319

Sum of ages of teacher and students=360

Therefore, age of teacher=S-s

=360-319

Age of teacher=41