Question
Olivia and Xandra's total mass is 48 kg. Xandra and Linda's total mass is 72 kg. Linda is three times as heavy as Olivia. What is the average mass of the three friends?
3 m

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Olivia and Xandra's total mass is 48 kg. Xandra and Linda's total mass is 72 kg. Linda is three times as heavy as Olivia. What is the average mass of the three friends?