average age of 6 boys is 14 years average age of 11 girls is 12 years | Examsbook

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Q:
Average age of 6 boys is 14 years. Average age of 11 girls is 12 years. What is the average age (in years) of all boys and girls?

1
19.3
2
14.6
3
12.7
4
8.5

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Answer : 3. "12.7"

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