The average age of four children in a family is 12 years. If the spacing between their ages is 4 years, the age of the youngest child is ?

The average age of four children in a family is 12 years. If the spaci

1.	The average age of four children in a family is 12 years. If the spacing between their ages is 4 years, the age of the youngest child is ?
A.	6 years
B.	7 years
C.	8 years
D.	9 years
Answer» B. 7 years

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The average age of four children in a family is 12 years. If the spacing between their ages is 4 years, the age of the youngest child is ?

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