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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: Options : 2 years 2.4 years 3 years 1.5 years

Question

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:

Options : 2 years 2.4 years 3 years 1.5 years

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Solution

The problem can be solved in the following steps:

Step 1: Three years ago, the total age of the family members was 5 members * 17 years/member = 85 years.

Step 2: Today, the total age of the same 5 members would be 85 years + 3 years/member * 5 members = 100 years.

Step 3: Today, the total age of the family including the baby is 6 members * 17 years/member = 102 years.

Step 4: So, the present age of the baby is 102 years - 100 years = 2 years.

Therefore, the baby is 2 years old.

This problem has been solved

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