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 might be the weight of the new person?
Answer: (3) 85 kg
The average weight of 8 person’s increases by 2.5 kg .
Then, total weight increased = 8 x 2.5
= 20 kg
Therefore, the weight of new person = 65 + 20
= 85 kg.
Hence, the answer is (3) 85 kg.