The average age of the mother and her six children is 12 years which is reduced by 5 years if the age of the mother is excluded. How old is the mother ?

A. 40 years

B. 42 years

C. 48 years

D. 50 years

Answer: Option B

Solution(By Examveda Team)

Age of the mother
= (12 × 7 - 7 × 6) years
= 42 years