Question
2 years ago, the average age of the family of 3 members
is 13 years. A baby is born now; the average age of the family is same as before. Find the age of the baby?Solution
The total present age of the family of 3 members = (13 x 3) + (2 x 3) = 45 A baby is born now; the average age of the family is same as before. The total present age of the family of 4 members (Including the baby) = 13 x 4 = 52 The age of the baby = 52 – 45 = 7 years
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