Question

When the average age of a couple and their son was 56 years, the son got married and became father of a child after one year. When the child became 6 years old, the average age of the family became 48 years. What was the age of daughter-in-law at the time of marriage?
A) 38 years
B) 35 years
C) 36 years
D) 34 years

Answer 1

I think C)36 year.

simultaneously equation