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Option 3 : 73
Given
The average weight of 10 person = 53 kg
Weight of new person = 63 kg
Formula Used
Average = Sum of data/Number of data
Calculation
Let the weight of replaced person be x
Total weight of 10 persons = 53 × 10 = 530
⇒ 530 + 63 - x = 52 × 10
⇒ x = 73 kg
∴ The required answer is 73 kg
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