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? Choose the correct choice from the following answers
A) 40 years  B) 42 years  C) 50 years  D) 52 years  E) None
Solution   Age of the mother	= (12 x 7 - 7 x 6)   = 42 years.   Answer 42 years
<result>B</result>
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?