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The average age of 12 boys is 15 years a...

The average age of 12 boys is 15 years and the average age of 18 girls is 12 years. What is the combined average age of the boys and girls, taken together?
12 लड़कों की औसत उम्र 15 वर्ष है तथा 18 लड़कियों की औसत उम्र 12 वर्ष है | लड़कों एवं लड़कियों की संयुक्त औसत उम्र ज्ञात करें |

A

15.4

B

13.2

C

16.6

D

14.8

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