1.

There are five members in a family with an average age of 55 years at the time of marriage of the youngest boy of the family and after five years of marriage, the average age of the family is 47 years when a baby was born after 3 years of the marriage. Find the age of the boy's wife at the time of the marriage.1. 29 yrs2. 26 yrs3. 22 yrs4. 27 yrs5. 21 yrs

Answer» Correct Answer - Option 3 : 22 yrs

Given:

Average age of 5 members = 55 yrs

Average age of 7 members = 47 yrs

Formula used:

Average = Sum of observations/Total number of observations

Calculations:

Total age of 5 members = 55×5 = 275 yrs

After 5 years total age of 5 members = 275 + 25 = 300

Baby's age = 2 yrs (as it was born after 3 years of marriage)

Current total age,

300 + 2 + wife's age = 47× 7 = 329

wife's age = 27 yrs

Age at time of marriage = 27 - 5 = 22 yrs

∴ The answer is 22 years.



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