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4 years ago, the average age of the family of 5 members is 23 years. A baby is born now; the average age of the family is same as before. Find the age of the baby?

A7 years

B3 years

C9 years

D5 years

Answer:

B. 3 years

Read Explanation:

The total present age of the family of 5 members = (23*5) + (4*5) = 135 A baby is born now; the average age of the family is same as before. The total present age of the family of 6 members (Including the baby) = > 23*6 = 138 The age of the baby = 138 – 135 = 3 years


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