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Five years ago, the average age of a family, which consisted of three members, was 27 years. The family now consists of four members as a baby was born recently. The current average age of the family is 25 years. How many years ago was the baby born?
  • a)
    1 year ago
  • b)
    2 years ago
  • c)
    3 years ago
  • d)
    4 years ago
Correct answer is option 'D'. Can you explain this answer?
Most Upvoted Answer
Five years ago, the average age of a family, which consisted of three ...
Average age of the family 5 years ago (3 members) = 27 years
Sum of the ages of the 3 older members now= (27 + 5) × 3 = 96 years
Average age of the family now (4 members) = 25 years
Sum of the ages of the 4 numbers of the family now = 25 ×4 = 100 years
So, Age of child = 100 – 96 = 4 years
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Community Answer
Five years ago, the average age of a family, which consisted of three ...
Analysis:
The average age of the family five years ago was 27 years, and the family consisted of three members. The current average age of the family is 25 years, and now the family consists of four members.

Solution:
To solve this problem, we need to find the age of the baby when he/she was born. Let's assume the age of the baby when he/she was born is x years.

Step 1: Calculate the total age of the family five years ago
- Five years ago, the family consisted of three members, so the total age = 27 * 3 = 81 years

Step 2: Calculate the total age of the family now
- Now, the family consists of four members, so the total age = 25 * 4 = 100 years

Step 3: Find the age of the baby when he/she was born
- Total age now = Total age five years ago + Age of the baby when born
- 100 = 81 + x
- x = 100 - 81
- x = 19 years

Conclusion:
The baby was born 4 years ago, as the baby's age when born is 19 years. Therefore, the correct answer is option D - 4 years ago.
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Five years ago, the average age of a family, which consisted of three members, was 27 years. The family now consists of four members as a baby was born recently. The current average age of the family is 25 years. How many years ago was the baby born?a)1 year agob)2 years agoc)3 years agod)4 years agoCorrect answer is option 'D'. Can you explain this answer?
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