the average weight of 8 persons increases by 2.5 kg when a new person comes in

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Question

the average weight of 8 persons increases by 2.5 kg when a new person comes in place of one of them weighing 65 kg. what might be the weight of the new person ?

Options:

A . 70 kg

B . 75 kg

C . 80 kg

D . 85 kg

Answer: Option D
Explanation :

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