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added by Ninjai Feb. 2, 2018, 2:43 p.m.
If 8 identical balls weigh 6 kg, what is the weight of 12 balls?
8 kg
9 kg
10 kg
11 kg
If 8 balls weigh 6 kg than 4 balls weigh half of it, which equals 3 kg . So 12 balls (8+4) = 6 kg + 3 kg = 9 kg.
Ninjai
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