Question
Min and Opal's total mass is 57 kg. Opal and Gwen's total mass is 83 kg. Gwen is three times as heavy as Min. What is the average mass of the three friends?
3 m

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Min and Opal's total mass is 57 kg. Opal and Gwen's total mass is 83 kg. Gwen is three times as heavy as Min. What is the average mass of the three friends?