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The average weight of 8 people increases by 2.5 kg when a new person replaces one of them who weighs 60 kg. Find the weight of the new person (in kg).

Competition practiceAverages & Ages
  • A85
  • B80
  • C82.5
  • D70

Step-by-Step Solution

Total weight rises by kg, so the new person weighs 60 + 20 = 80 kg.
Answer: B) 80

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