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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 |
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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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