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9th Class Mental Ability Related to Competitive Exam Question Bank Arithmetical Reasoning

  • question_answer
    15 years ago the difference between the ages of two persons was 10 years. The elder one was twice as old as the younger one. The present age of the elder person is:

    A) 25 years             

    B)       35 years

    C) 45 years              

    D)       55 years

    E) None of these

    Correct Answer: B

    Solution :

    Explanation Option [b] is correct. Let the present age of the elder person be x years. Then, the present age of the younger person = (x ? 10) years. According to the given information in the question, \[\left( x15 \right)=2\left( x1015 \right)\] or \[x=35\]years \[\therefore \] The present age of the elder person is 35 years.


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