The average weight of 8 persons is increased by 2.5 kg when one of them whose weight is 56 kg is replaced by a new man. The weight of the new man is?

66 kg

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75 kg

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67.6 kg

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76 kg

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None of these

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Solution

The correct option is D 76 kg
Weight of new man $= 56 + 8 \times 2.5 k g$
=(56+20) kg =76 kg

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