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The average weight of 8 men is increased by 1.5 kg when one of the men, who weighs 65 kg, is replaced by a new man. The weight of the new man is:

  • A.75 kg
  • B.76 kg
  • C.77 kg
  • D.78 kg

Answer: C

The total increase in weight for the group of 8 men is 8 × 1.5 kg = 12 kg.

This increase is the difference between the new man's weight and the old man's weight.

Weight of new man = Weight of old man + Total increase

Weight of new man = 65 kg + 12 kg = 77 kg.

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