A group of people consists of men, women and children. Among them, 20% are men, 50% are women and the rest are children, and their average weights are 45 kg, 50 kg and 50 kg, respectively. The average weight (in kg) of the group is:

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Apedia · Accepted Answer

Correct Answer: 49.

Explanation: [Population Distribution Modeling]: To prevent messy fractional calculations, we can confidently assume the entire group constitutes exactly 100 individuals. Consequently, there are 20 men, 50 women, and naturally, 30 children (since 100 - 20 - 50 = ...

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A group of people consists of men, women and children. Among them, 20% are men, 50% are women and the rest are children, and their average weights are 45 kg, 50 kg and 50 kg, respectively. The average weight (in kg) of the group is: