3 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
Choose the most appropriate option.
A) 1 years	B) 2 years	C) 3 years	D) 4 years	E) None
Sol.   Total age of 5 members, 3 years ago = (17 x 5)years = 85 years.   Total age of 5 members now = (85 + 3 x 5)years = 100 years.   Total age of 6 members now = (17 x 6)years = 102 years.   ∴ Age of the baby = (102 - 100)= 
<gadget id="calculator">(102 - 100)</gadget>
<output>2</output>
2 years   Answer 2 years
<result>B</result>
3 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