Q152
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
AnswerC.
48 years
D.
50 years
Answer: Option B
Solution
Answer: Option B
Solution:
Age of the mother= (12 × 7 - 7 × 6) years
= 42 years