Question
When the average age of a husband and wife and their son
was 44 years, the son got married and a child was born just one year after their marriage. When child turned to be 7 years, then the average age of the family become 38 years. What was the age of daughter-in-law at the time of marriage?Solution
At the time of son’s marriage, (Husband + Wife + Son) = 44 × 3 = 132 years and Let the age of daughter-in-law be x years Eight years after marriage, 132 + (8 × 3) + 7 + x + 8 = 190 132 + 24 + 7 + x + 8 = 190 x = 19 years
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