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
Ans: B.Sol.
Therefore age of the mother
= ( 12 × 7 – 7 × 6)
= 42 years.
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