0000:00:00:00:00Start17Number 17ExplanationTwo study groups have 444 members each. Their average weights are 30 kg30 \text{ kg}30 kg and 33 kg33 \text{ kg}33 kg. If one child from each group is exchanged, the average weights become equal. The difference in weight between the two exchanged children is ....112 kg1\frac{1}{2} \text{ kg}121 kg2 kg2 \text{ kg}2 kg4 kg4 \text{ kg}4 kg6 kg6 \text{ kg}6 kg8 kg8 \text{ kg}8 kg
17Number 17ExplanationTwo study groups have 444 members each. Their average weights are 30 kg30 \text{ kg}30 kg and 33 kg33 \text{ kg}33 kg. If one child from each group is exchanged, the average weights become equal. The difference in weight between the two exchanged children is ....112 kg1\frac{1}{2} \text{ kg}121 kg2 kg2 \text{ kg}2 kg4 kg4 \text{ kg}4 kg6 kg6 \text{ kg}6 kg8 kg8 \text{ kg}8 kg