The average weight of $8$ person's increases by $2.5 k g$ when a new person comes in place of one of them weighing $65 k g$ . What might be the weight of the new person?

76 k g

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76.5 k g

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85 k g

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Data inadequate

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None of these

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Solution

The correct option is B $85 k g$
Total weight increased $= (8 \times 2.5) k g = 20 k g$ .
Weight of new person $= (65 + 20) k g = 85 k g$ .

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The average weight of 8 person's 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?

The correct option is B 85 kgTotal weight increased =(8×2.5)kg=20 kg.Weight of new person =(65+20)kg=85 kg.

The average weight of $8$ person's increases by $2.5 k g$ when a new person comes in place of one of them weighing $65 k g$ . What might be the weight of the new person?

The correct option is B $85 k g$
Total weight increased $= (8 \times 2.5) k g = 20 k g$ .
Weight of new person $= (65 + 20) k g = 85 k g$ .