The average age of 10 children is 9 years 9 months. The average age of 9 children is 8 years 11 months. What is the age of the tenth child ?

The average age of 10 children is 9 years 9 months. The average age of

1.	The average age of 10 children is 9 years 9 months. The average age of 9 children is 8 years 11 months. What is the age of the tenth child ?
A.	17 years 3 months
B.	18 years 4 months
C.	17 years 5 months
D.	18 years 3 month
Answer» B. 18 years 4 months

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The average age of 10 children is 9 years 9 months. The average age of 9 children is 8 years 11 months. What is the age of the tenth child ?

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