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

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

Options:

A . 17 years 3 months

B . 18 years 4 months

C . 17 years 5 months

D . 18 years 3 months

Answer: Option A

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