The average weight of 8 men is increased by 1.5 kg when one of the men who weight 65 kg is replaced by a new man. The weight of the new man is:
Answer: (4) 77 kg
The average weight of 8 men is increased by 1.5 kg.
Then, the increased weight = 1.5 x 8
= 12 kg
The weight of old man = 65 kg
Then, the weight of new man = 65 + 12
= 77 kg.
Hence, the answer is (4) 77 kg.