When the average age of a father, mother and their son was 90 years, the son got married and a childwas born just 6 year after the marriage when child turned 14 years the average age of the family is 80yrs.Find the age of daughter - in - law at present?

When the average age of a father, mother and their son was 90 years, t

1.	When the average age of a father, mother and their son was 90 years, the son got married and a childwas born just 6 year after the marriage when child turned 14 years the average age of the family is 80yrs.Find the age of daughter - in - law at present?
A.	55
B.	56
C.	57
D.	58
Answer» C. 57

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When the average age of a father, mother and their son was 90 years, the son got married and a childwas born just 6 year after the marriage when child turned 14 years the average age of the family is 80yrs.Find the age of daughter - in - law at present?

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