Question
Raeann and Diana's total mass is 48 kg. Diana and Olivia's total mass is 78 kg. Olivia is three times as heavy as Raeann. What is the average mass of the three friends?
3 m

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Raeann and Diana's total mass is 48 kg. Diana and Olivia's total mass is 78 kg. Olivia is three times as heavy as Raeann. What is the average mass of the three friends?