10 years age the age of Sachin was twice the age of Ajaya :

10 years age the age of Sachin was twice the age of Ajaya. If 10 years hence, Sachin will be 40 year old, then what is the present age of Ajaya?

  1. 20
  2. 10
  3. 30
  4. 15
Anurag Mishra Professor Asked on 17th December 2015 in Maths.
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  • 1 Answer(s)

    Answer:  (1) 20 

    Explanation:-
    Let the present age of Sachin be X years.

    If the 10 years hence, Sachin will be 40 years old.
    Then, 
    X + 10 = 40 
     X = 40 – 10 
     X = 30

    So, the present age of Sachin is 30 years. 

    10 years ago the age of Sachin was twice the age of Ajaya. 
    Then   30 – 10 = 2 (Ajaya – 10)
     20 = 2 Ajaya – 20
    2 Ajaya = 40
    Ajaya = 40/2
     Ajaya = 20 years

    Then the present age of Ajaya is 20 years. 

    Hence, the correct answer is option (1) 20 years. 

    Anurag Mishra Professor Answered on 17th December 2015.
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