The average weight of 8 person’s increases by 2.5 kg when a new person comes in place of one of them weighing 65 kg. What is the weight of the new person?
- 75 Kg
- 50 Kg
- 85 Kg
- 80 Kg
Total increase in weight = 8×2.5=20
If x is the weight of the new person, total increase in weight = x – 65
=> 20 = x – 65
=> x = 20 + 65 = 85
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