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Each question is followed by two statements, A and B. Answer each question using the following instructions:
Mark option (1) if the question can be answered by using statement A alone but not by using statement B alone.
Mark option (2) if the question can be answered by using statement B alone but not by using statement A alone.
Mark option (3) if the question can be answered by using either statement alone.
Mark option (4) if the question can be answered by using both the statements together but not by either of the statements alone.
Mark option (5) if the question cannot be answered on the basis of the two statements.

A family has only one kid. The father says “After n years, my age will be 4 times the age of my kid”. The mother says “after n years, my age will be 3 times that of my kid”. What would be the combined age of parents after n years?
A. The age difference between the parents is 10 years.
B. After 'n' years the kid is going to be twice as old as she is now.
  • a)
    1
  • b)
    2
  • c)
    3
  • d)
    4
  • e)
    5
Correct answer is option 'A'. Can you explain this answer?
Verified Answer
Each question is followed by two statements, A and B. Answer each ques...
Solution: Consider statement A: Let age of the kid after n years be x. Then age of father after n years is 4x and that of mother is 3x years. Now the age difference will always remain constant. 4x- 3x = 10. So x = 10
After n years the combined ages of parents will be 7x = 70 years Statement A alone is sufficient to answer the question. 
Consider statement B: After n years the kid is going to be twice as old as she is now. This means that right now the kid is n years old and after n years she will be 2n years old. Then age of father after n years is 4 x 2n and that of mother is 3 x 2n years.
F + M = 8n + 6n = 14n. But the value of n is not known, The sum of their ages cannot be determined using statement B alone. Statement B alone is not sufficient to answer the question.
Hence, option 1. 
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Most Upvoted Answer
Each question is followed by two statements, A and B. Answer each ques...
Analysis:
The problem involves finding the combined age of the parents after n years based on the statements given by the father and mother.

Statement A: The age difference between the parents is 10 years.

Statement B: After n years, the kid is going to be twice as old as she is now.

Explanation:
- Let the current age of the father be F, the current age of the mother be M, and the current age of the kid be K.
- According to the father's statement, after n years, F + n = 4(K + n).
- According to the mother's statement, after n years, M + n = 3(K + n).

Analysis of Statement A:
- The age difference between the parents is 10 years, i.e., F - M = 10.
- Combining this with the father's statement, we can solve for K and find the combined age of the parents after n years.

Analysis of Statement B:
- After n years, the kid is going to be twice as old as she is now, i.e., K + n = 2K.
- Combining this with the mother's statement, we can solve for K and find the combined age of the parents after n years.

Conclusion:
- Statement A alone is sufficient to find the combined age of the parents after n years.
- Therefore, the correct answer is option (1).
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Each question is followed by two statements, A and B. Answer each question using the following instructions:Mark option (1) if the question can be answered by using statement A alone but not by using statement B alone.Mark option (2) if the question can be answered by using statement B alone but not by using statement A alone.Mark option (3) if the question can be answered by using either statement alone.Mark option (4) if the question can be answered by using both the statements together but not by either of the statements alone.Mark option (5) if the question cannot be answered on the basis of the two statements.A family has only one kid. The father says After n years, my age will be 4 times the age of my kid. The mother says after n years, my age will be 3 times that of my kid. What would be the combined age of parents after n years?A. The age difference between the parents is 10 years.B. After nyears the kid is going to be twice as old as she is now.a)1b)2c)3d)4e)5Correct answer is option 'A'. Can you explain this answer?
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