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18 years ago the average age of a family of four members was 45 years. Two children were born in that span of 18 years. The present average age of the family remained unchanged. Among the two children who were born in between the 18 years, if the older child at present is 12 years more than the younger one, what is the respective ratio between the present age of the older child and the present age of the younger child?
  • a)
    4 : 1
  • b)
    3 : 2
  • c)
    5 : 1
  • d)
    3 : 1
  • e)
    5 : 2
Correct answer is option 'C'. Can you explain this answer?
Most Upvoted Answer
18 years ago the average age of a family of four members was 45 years...
18 years ago,
The sum of age of a family of four members = 45 × 4 = 180 years
Now at present,
The sum of age of four members = 180 + 18 × 4 =252 years
Let the Present age of younger child be x years
And the present age of older child = (x + 12) years
Now, as per the question
252 + x + 12 + x = 45 × 6
⇒ 2x = 270 – 264
⇒ 2x = 6
⇒ x = 3
So the required ratio = (3 + 12) : 3 = 15 : 3 = 5 : 1
Hence, the correct option is (C).
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18 years ago the average age of a family of four members was 45 years. Two children were born in that span of 18 years. The present average age of the family remained unchanged. Among the two children who were born in between the 18 years, if the older child at present is 12 years more than the younger one, what is the respective ratio between the present age of the older child and the present age of the younger child?a)4 : 1b)3 : 2c)5 : 1d)3 : 1e)5 : 2Correct answer is option 'C'. Can you explain this answer?
Question Description
18 years ago the average age of a family of four members was 45 years. Two children were born in that span of 18 years. The present average age of the family remained unchanged. Among the two children who were born in between the 18 years, if the older child at present is 12 years more than the younger one, what is the respective ratio between the present age of the older child and the present age of the younger child?a)4 : 1b)3 : 2c)5 : 1d)3 : 1e)5 : 2Correct answer is option 'C'. Can you explain this answer? for Banking Exams 2025 is part of Banking Exams preparation. The Question and answers have been prepared according to the Banking Exams exam syllabus. Information about 18 years ago the average age of a family of four members was 45 years. Two children were born in that span of 18 years. The present average age of the family remained unchanged. Among the two children who were born in between the 18 years, if the older child at present is 12 years more than the younger one, what is the respective ratio between the present age of the older child and the present age of the younger child?a)4 : 1b)3 : 2c)5 : 1d)3 : 1e)5 : 2Correct answer is option 'C'. Can you explain this answer? covers all topics & solutions for Banking Exams 2025 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for 18 years ago the average age of a family of four members was 45 years. Two children were born in that span of 18 years. The present average age of the family remained unchanged. Among the two children who were born in between the 18 years, if the older child at present is 12 years more than the younger one, what is the respective ratio between the present age of the older child and the present age of the younger child?a)4 : 1b)3 : 2c)5 : 1d)3 : 1e)5 : 2Correct answer is option 'C'. Can you explain this answer?.
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