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The difference between the ages of two persons is 10 years. Fifteen years ago, the elder one was twice as old as the younger one. The present age of elder person is?
  • a)
    25 years                   
  • b)
    35 years
  • c)
    45 years                   
  • d)
    55 years
  • e)
    None of these
Correct answer is option 'B'. Can you explain this answer?
Most Upvoted Answer
The difference between the ages of two persons is 10 years. Fifteen ye...
Let the elder person be 'A' and younger be 'B'. A - B = 10. A = 10 +B. 15 years ago,A -15 = 2(B-15) 10 + B - 15 = 2(B - 15). B -5 = 2B - 30. B = 25 A = B + 10 Therefore, A = 35
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Community Answer
The difference between the ages of two persons is 10 years. Fifteen ye...
Problem:
The difference between the ages of two persons is 10 years. Fifteen years ago, the elder one was twice as old as the younger one. The present age of the elder person is?

Solution:
Let the present age of the elder person be x.
Then the present age of the younger person will be x - 10.
Fifteen years ago, the elder person's age was (x - 15) and the younger person's age was (x - 10 - 15) = (x - 25).
According to the problem, the elder person's age was twice as old as the younger person's age.
So,

x - 15 = 2(x - 25)
x - 15 = 2x - 50
x = 35

Therefore, the present age of the elder person is 35 years.

Answer: (b) 35 years
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The difference between the ages of two persons is 10 years. Fifteen years ago, the elder one was twice as old as the younger one. The present age of elder person is?a)25 yearsb)35 yearsc)45 yearsd)55 yearse)None of theseCorrect answer is option 'B'. Can you explain this answer?
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The difference between the ages of two persons is 10 years. Fifteen years ago, the elder one was twice as old as the younger one. The present age of elder person is?a)25 yearsb)35 yearsc)45 yearsd)55 yearse)None of theseCorrect answer is option 'B'. Can you explain this answer? for Quant 2024 is part of Quant preparation. The Question and answers have been prepared according to the Quant exam syllabus. Information about The difference between the ages of two persons is 10 years. Fifteen years ago, the elder one was twice as old as the younger one. The present age of elder person is?a)25 yearsb)35 yearsc)45 yearsd)55 yearse)None of theseCorrect answer is option 'B'. Can you explain this answer? covers all topics & solutions for Quant 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for The difference between the ages of two persons is 10 years. Fifteen years ago, the elder one was twice as old as the younger one. The present age of elder person is?a)25 yearsb)35 yearsc)45 yearsd)55 yearse)None of theseCorrect answer is option 'B'. Can you explain this answer?.
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