The average weight of 8 men is increased by 1.5 kg when one of the men who weigh 65 kg is replaced by a new man. The weight of the new man is:Options :76 kg76.5 kg76.7 kg77 kg
Question
The average weight of 8 men is increased by 1.5 kg when one of the men who weigh 65 kg is replaced by a new man. The weight of the new man is:Options :76 kg76.5 kg76.7 kg77 kg
Solution
The total weight increase is due to the replacement of one man. This increase is shared among the 8 men, which means the new man weighs more than the old man.
- The total weight increase is 1.5 kg * 8 men = 12 kg.
- The weight of the new man is therefore 65 kg (the weight of the man who left) + 12 kg (the total weight increase) = 77 kg.
So, the weight of the new man is 77 kg.
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