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At the time of marriage of a son the ave...

At the time of marriage of a son the average of age of mother, father and son is 42 yrs. After one year of marriage a baby is born when the baby turns 5 years old then the average age of whole family is 36 years. Find the age of their daughter-in-law at the time of her marriage.

A

26 yr

B

25 yr

C

24 yr

D

23 yr

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