Three years ago, the average age of a family of 5 members was 17 yr. A baby having been born, the average age of the family is the same today. The present age of th
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Let age of the baby is x.
3 years ago total age of the family = 5 *17 = 85 years.
Total age of the 5 member at present time,
= 85 + 3*5 = 100 years
Total age of the family at present time including baby,
= 100 + X.
The average of the family including baby at present time,
= 17 years.
(100 +X)/6 = 17
100 +X = 102
X = 102 - 100 = 2 years.
Step-by-step explanation:
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