Question
The combined average age of M, F, and S was 54 years
when S got married. After 6 years, an infant was born. The average age of the family, 12 years post-marriage, is now 48 years. Calculate the age of the bride at the time of the marriage.Solution
ATQ,  Total present age of M, F and S  = 54 × 3 + 12 × 3  = 162 + 36  = 198 years.  Sum of present age of family  = 48 × 5  = 240 years  Age of child = 6 years  So, age of bride at the time of marriage  = 240 – 198 – 6 – 12  = 24 years
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