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### The average weight of a group of 20 boys was calculated to be 89.4 kg and it was later discovered that one weight was misread as 78 kg instead of 87 kg. The correct average weight is –

- A. 88.95kg
- B. 89.25 kg
- C. 89.55 kg
- D. 89.85 kg

**Answer: Option D **

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