In a pre school, the average weight of 30 girls in a class among 50 students is

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In a pre school, the average weight of 30 girls in a class among 50 students is 16 kg and that of the remaining students is 15.5 kg. What is the average weight of all the students in the class ?

Options:

A . 15.2 kg

B . 15.8 kg

C . 15.4 kg

D . 15.6 kg

Answer: Option B

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