Question
Joelle and Nora's total mass is 36 kg. Nora and Wendy's total mass is 68 kg. Wendy is three times as heavy as Joelle. What is the average mass of the three friends?
3 m

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Joelle and Nora's total mass is 36 kg. Nora and Wendy's total mass is 68 kg. Wendy is three times as heavy as Joelle. What is the average mass of the three friends?