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Weighty Logic

Problem

Daddy Bear is 60 kg heavier than Mummy Bear, and Baby Bear is 20 kg heavier than Goldilocks. Given that the lightest and the heaviest weigh 20 kg more than the combined weights of the other two, and the combined weight of all four is 300 kg, how heavy is Goldilocks?

Problem ID: 218 (30 Mar 2005)     Difficulty: 2 Star

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