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The average weight of a team of 10 players increases by 2.5 kg when two players weighing 58 kg and 62 kg are replaced by two new players. What is the average weight of these two new players?

1. 70 kg
2. 72.5 kg
3. 75 kg
4. 77.5 kg

Correct answer: 72.5 kg

Solution

An increase of 2.5 kg in the average of 10 players means the total team weight increases by 25 kg. The replaced players weighed 120 kg together, so the new pair must weigh 145 kg, giving an average of 72.5 kg.

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