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Three years ago, the average age of a family of 5 members was 17 years. A baby having been born, A baby having been born, the average age of the family is the same today. The present age of the baby is

 

Three years ago, the average age of a family of 5 members was 17 years. A baby having been born, the average age of the family is the same today. The present age of the baby is:

 

  • Option 1)

     

    2 years

     

  • Option 2)

     

    2.4 years

     

  • Option 3)

     

    4 years

     

  • Option 4)

     

    1.5 years

     

  • Option 5)

     

    3 years

     

Answers (1)
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Three years ago, the average age of a family of 5 members was 17 years. A baby having been born, the average age of the family is the same today. The present age of the baby is solved below:

3 \: years \: ago=> sum \: of \: ages = 5*17=85
Present\: ages \: sum = 85 +(5*3) = 100 years
After \: baby\: born; sum = 6 *17 = 102 years.
Age \: of\: baby = 102 - 100 = 2 years

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